Is Homework Good for Kids? Here's What the Research Says

A s kids return to school, debate is heating up once again over how they should spend their time after they leave the classroom for the day.

The no-homework policy of a second-grade teacher in Texas went viral last week , earning praise from parents across the country who lament the heavy workload often assigned to young students. Brandy Young told parents she would not formally assign any homework this year, asking students instead to eat dinner with their families, play outside and go to bed early.

But the question of how much work children should be doing outside of school remains controversial, and plenty of parents take issue with no-homework policies, worried their kids are losing a potential academic advantage. Here’s what you need to know:

For decades, the homework standard has been a “10-minute rule,” which recommends a daily maximum of 10 minutes of homework per grade level. Second graders, for example, should do about 20 minutes of homework each night. High school seniors should complete about two hours of homework each night. The National PTA and the National Education Association both support that guideline.

But some schools have begun to give their youngest students a break. A Massachusetts elementary school has announced a no-homework pilot program for the coming school year, lengthening the school day by two hours to provide more in-class instruction. “We really want kids to go home at 4 o’clock, tired. We want their brain to be tired,” Kelly Elementary School Principal Jackie Glasheen said in an interview with a local TV station . “We want them to enjoy their families. We want them to go to soccer practice or football practice, and we want them to go to bed. And that’s it.”

A New York City public elementary school implemented a similar policy last year, eliminating traditional homework assignments in favor of family time. The change was quickly met with outrage from some parents, though it earned support from other education leaders.

New solutions and approaches to homework differ by community, and these local debates are complicated by the fact that even education experts disagree about what’s best for kids.

The research

The most comprehensive research on homework to date comes from a 2006 meta-analysis by Duke University psychology professor Harris Cooper, who found evidence of a positive correlation between homework and student achievement, meaning students who did homework performed better in school. The correlation was stronger for older students—in seventh through 12th grade—than for those in younger grades, for whom there was a weak relationship between homework and performance.

Cooper’s analysis focused on how homework impacts academic achievement—test scores, for example. His report noted that homework is also thought to improve study habits, attitudes toward school, self-discipline, inquisitiveness and independent problem solving skills. On the other hand, some studies he examined showed that homework can cause physical and emotional fatigue, fuel negative attitudes about learning and limit leisure time for children. At the end of his analysis, Cooper recommended further study of such potential effects of homework.

Despite the weak correlation between homework and performance for young children, Cooper argues that a small amount of homework is useful for all students. Second-graders should not be doing two hours of homework each night, he said, but they also shouldn’t be doing no homework.

Not all education experts agree entirely with Cooper’s assessment.

Cathy Vatterott, an education professor at the University of Missouri-St. Louis, supports the “10-minute rule” as a maximum, but she thinks there is not sufficient proof that homework is helpful for students in elementary school.

“Correlation is not causation,” she said. “Does homework cause achievement, or do high achievers do more homework?”

Vatterott, the author of Rethinking Homework: Best Practices That Support Diverse Needs , thinks there should be more emphasis on improving the quality of homework tasks, and she supports efforts to eliminate homework for younger kids.

“I have no concerns about students not starting homework until fourth grade or fifth grade,” she said, noting that while the debate over homework will undoubtedly continue, she has noticed a trend toward limiting, if not eliminating, homework in elementary school.

The issue has been debated for decades. A TIME cover in 1999 read: “Too much homework! How it’s hurting our kids, and what parents should do about it.” The accompanying story noted that the launch of Sputnik in 1957 led to a push for better math and science education in the U.S. The ensuing pressure to be competitive on a global scale, plus the increasingly demanding college admissions process, fueled the practice of assigning homework.

“The complaints are cyclical, and we’re in the part of the cycle now where the concern is for too much,” Cooper said. “You can go back to the 1970s, when you’ll find there were concerns that there was too little, when we were concerned about our global competitiveness.”

Cooper acknowledged that some students really are bringing home too much homework, and their parents are right to be concerned.

“A good way to think about homework is the way you think about medications or dietary supplements,” he said. “If you take too little, they’ll have no effect. If you take too much, they can kill you. If you take the right amount, you’ll get better.”

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Harris Cooper received his Ph.D. in Social Psychology from the University of Connecticut in 1975. From 1977 to 2003, he was on the faculty at the University of Missouri. In 2003, he moved to Duke University where he is a professor in the Department of Psychology & Neuroscience and served as Director of the Program in Education from 2003 to 2008. Dr. Cooper has been a Visiting Scholar at Stanford University, the University of Oregon, and the Russell Sage Foundation. Dr. Cooper's research interests follow two paths. The first concerns research synthesis and research methodology. His book, Synthesizing Research: A Guide for Literature Reviews (1998), is in revision for its 4th edition. He is the co-editor of the Handbook of Research Synthesis (1994), a volume that is currently being prepared for a 2nd edition. Dr. Cooper and his students have published over two dozen research syntheses, many of which appeared in varied prestigious journals including Psychological Bulletin, Review of Educational Research, Journal of Personality and Social Psychology, the Journal of Marketing Research, and Developmental Medicine and Child Neurology. In 2007, Dr. Cooper was the recipient of the Frederick Mosteller Award for Contributions to Research Synthesis Methodology given by the Campbell Collaboration and in 2008 he received the Ingram Olkin Award for Distinguished Lifetime Contribution to Research Synthesis from the Society for Research Synthesis Methodology. In 2007, Dr. Cooper was appointed to membership on the National Academy of Sciences’ Committee on Social Science Evidence in Use. This committee gives sustained attention to issues and actions aimed at promoting high quality social science research with an eye toward improving evidence used in public policy decision-making. He is also a member of the NAS Committee on Advancing Social Science Theory: The Importance of Common Metrics. In 2007-08, he chaired the Journal Article Reporting Standards Working Group that developed guidelines for what information about research should be included in manuscripts submitted to journals published by the American Psychological Association (American Psychologist, in press). Dr. Cooper authored the chapter on “Research Questions and Research Design” in the Handbook of Research in Educational Psychology. He is co-author of the Study Design and Implementation Assessment Device (DIAD), an instrument for assessing the correspondence between the features and conduct of social science research and its ability to draw inferences about causal relationships (Psychological Methods, 2008). He recently agreed to be the editor of the American Psychological Association’s three-volume Handbook of Research Methods in Psychology. Dr. Cooper is also interested in the application of social and developmental psychology to educational policy issues. In particular, he studies how the activities that children and adolescents engage in when they are not in school influence their academic achievement. His research synthesis titled Homework (1989) was published as a monograph and provided the evidence base for a guide to policy and practice (The Battle over Homework: Common Ground for Administrators, Teachers, and Parents, 3rd edition, 2007). He and his students recently updated the synthesis of homework research (Review of Educational Research, 2006) and the resulting article received the 2007 Outstanding Review of Research Award from the American Educational Research Association. Dr. Cooper ´s research on homework has had an impact on policies and practices nationwide. In addition to working directly with schools and school districts, his work has been highlighted frequently in national media. Dr. Cooper has been a guest on NBC Dateline, CBS This Morning, ABC Nightly News and Good Morning America, CNN Headline News, Nickelodeon Nick News, and The Oprah Winfrey Show. On radio, he has appeared on The Larry King Show, NPR’s Talk of the Nation and the Mitch Ablom Show. Coverage of his work has also appeared in the New York Times, Wall Street Journal, Newsweek, Time, Readers´ Digest, and USA Today Weekend, as well as every major metropolitan newspaper. More specialized publications also have provided coverage of his work, including Parents, Parenting, and Child magazines, NEA Today, and The American Teacher. Dr. Cooper and his students also study the impact of school calendars and calendar variations on students and their families. Their research syntheses on summer learning loss (1996) and modified school calendars (2003) were published in Review of Educational Research. In 2000, their monograph entitled Making the Most of Summer School was published by the Society for Research on Child Development. This monograph reported a synthesis of over 90 evaluations of the effectiveness of summer school. Dr. Cooper and his students are currently working on syntheses of research regarding the effects of all-day kindergarten, extending the school year, and lengthening the school day on students’ academic achievement and related outcomes. In 2003, Dr. Cooper became Editor for the Psychological Bulletin and will serve through mid-2009. The Institute for Scientific Information (2006) ranked the Psychological Bulletin 1st among all multidisciplinary psychology journals with regard to both the number of times it is cited and the impact of articles on the field. It ranked 5th among all social science journals (n=1768) in total citations and 3rd in impact factor. He has been Associate Editor of Social Psychology of Education, and an Advisory Editor for the Journal of Educational Psychology, the Personality and Social Psychology Bulletin, the Elementary School Journal, Journal of Experimental Education, and the American Educational Research Journal. Dr. Cooper is a Fellow of the American Psychological Association Divisions 3 and 15, the American Psychological Society, and the American Educational Research Association. His research grants include three awards from the National Science Foundation, five from the Department of Education, two from the Russell Sage Foundation, two from the Smith Richardson Foundation, and one each from the Spencer Foundation, and the William and Flora Hewlett Foundation. In 1984, Dr. Cooper received the first Raymond B. Cattell Early Career Award for Programmatic Research from the American Educational Research Association (AERA). Dr. Cooper served a three-year term as the Chair of the Department of Psychological Sciences at the University of Missouri. This academic unit had over 30 regular faculty members and 20 non-regular faculty members and trained over 70 graduate students and 800 undergraduate majors each year. As Director of Duke University’s Program in Education, he oversaw teacher licensure programs at both the elementary and secondary level. From 1992 to 1998, he served as an elected member of the Columbia, MO, Board of Education, a school district with a $100 million budget serving 16,000 students. In 1997, he won the AERA Award for Interpretive Scholarship for his article “Speaking Power to Truth: Reflections of an Educational Researcher after Four Years of School Board Service.” Dr. Cooper served for six years (1999-2005) as the chair of the methods groups for the Campbell Collaboration and as their representative on the Campbell Collaboration International Steering Committee. His national service includes sitting on two committees on afterschool programs for the C.S. Mott Foundation and on the Steering Committee of the National Partnership for Quality Afterschool Programs. He was the Chair of the APA Council of Editors in 2006 and is a member of its committee revising the APA Publication Manual. He is on the Steering Committee of the Society for Research on Educational Effectiveness and on the Governing Board of the Regional Educational Laboratory serving the Appalachian region.

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Harris M. Cooper Hugo L. Blomquist Distinguished Professor Emeritus of Psychology and Neuroscience

            Harris Cooper received his Ph.D. in Social Psychology from the University of Connecticut in 1975. From 1977 to 2003, he was on the faculty at the University of Missouri. In 2003, he moved to Duke University where he is now Hugo L. Blomquist Distinguished Professor in the Department of Psychology & Neuroscience. Dr. Cooper has been a Visiting Scholar at Stanford University, the University of Oregon, and the Russell Sage Founda­tion in New York City.

            Dr. Cooper's research interests follow two paths. The first concerns research synthesis and research methodology. His book, Research Synthesis and Meta-Analysis: A Step-by-Step Approach (2017) is in its 5 th edition. He is the co-editor of the Handbook of Research Synthe­sis and Meta-Analysis (3 rd edition anticipated, 2018). Dr. Cooper and his students have published over 30 research syntheses, many of which appeared in varied prestigious journals including Psychologi­cal Bulletin , Review of Educational Research , Journal of Personality and Social Psychology , Journal of Marketing Research and Developmental Medicine and Child Neurology . They have published over 40 articles on how to conduct research synthesis and meta-analysis. In 2007, Dr. Cooper was the recipient of the Frederick Mosteller Award for Contributions to Research Synthesis Methodology given by the International Campbell Collaboration. In 2008, he received the Ingram Olkin Award for Distinguished Lifetime Contribution to Research Synthesis from the Society for Research Synthesis Methodology.

Dr. Cooper was Editor-in-Chief of the American Psychological Association’s Handbook of Research Methods in Psychology (2012). The Handbook includes over 100 chapters on various aspects of research design and analysis, including both qualitative and quantitative approaches to research . He chaired the first APA committee that developed guidelines for information about research that should be included in manuscripts submitted to APA journals. In 2011, he published a book on the topic, titled Reporting Research in Psychology: How to Meet the New Standards for Journal Articles (2 nd edition anticipated, 2019).

            Dr. Cooper also studies the application of social and developmental psychology to education policy. In particular, he studies the relationship between time and learning. Most people think about how time relates to learning in terms of time in school (class time, instructional time, time-on-task). Dr. Cooper’s work zooms out from the school day rather than in. He focuses on issues related to (a) the school day and school calendar and (b) academic-related contexts children find themselves in when school is not in session.

            Dr. Cooper has studied homework for over 25 years. His synthesis of homework research received the 2007 Outstanding Review of Research Award from the American Educational Research Association. It also provided the evidence base for his guide to policy and practice, titled The Battle over Homework: Common Ground for Administrators, Teachers, and Parents (3 rd edition, 2007). His research on homework has had an impact on schools nationwide. In addition to working directly with parents, schools and school districts, his work has been highlighted frequently in national media. He has been a guest on NBC Dateline , CBS This Morning , ABC Nightly News and Good Morning America , CNN Headline News , Nickelodeon Nick News , and The Oprah Winfrey Show . On radio, he has appeared on The Larry King Show, NPR’s Talk of the Nation , Now Hear This, and the Mitch Ablom Show . Coverage of his work has also appeared in the New York Times , Wall Street Journal , Newsweek , Time , Readers´ Digest , the New Yorker and USA Today Weekend , as well as every major metropolitan newspaper. More specialized publications also have provided coverage of his work, including Parents, Parenting, and Child magazines, NEA Today , and The American Teacher .

           Dr. Cooper and his students also study the impact of school calendars and calendar variations on students and their families. Their research syntheses on summer learning loss and modified school calendars were published in Review of Educational Research . In 2000, their monograph titled Making the Most of Summer School was published by the Society for Research on Child Development. He and his students have also completed syntheses of research on the effects of full-day kindergarten and extending the school year and the school day (both published in Review of Educational Research, 2010). Most recently, Dr. Cooper and his students turned their attention to research on how well and with what affect students can grade their own and their peers’ academic assignments.

           From 1992 to 1998, Dr. Cooper served as an elected member of the Columbia, MO, Board of Education, at that time a school district with a $100 million budget serving 16,000 students. In 1997, he won the American Educational Research Association’s Award for Interpretive Scholarship for his article “Speaking Power to Truth: Reflections of an Educational Researcher after Four Years of School Board Service.” Dr. Cooper served on the National Academy of Sciences’ Committee on the Use of Social Science Knowledge in Public Policy (2007-2012).

           Dr. Cooper served as editor for the Psychological Bulletin from 2003 through mid-2009. Psychological Bulletin is in the top 5 social science journals in total citations and impact factor. He was the Chair of the APA Council of Editors in 2006 and was a member of the committee that revised the APA Publication Manual (2010). In 2012, Dr. Cooper became the inaugural co-editor of the Archives of Scientific Psychology , APA’s first open methods, collaborative data sharing, open access journal. He remained as editor until 2015.

           From 2009 to 2015, Dr. Cooper served as the Chief Editorial Advisor for the APA’s journal publishing program. In this role, he served as a resource to the editors of APA’s 70+ journals as well as the mediator of disputes between editors and authors and between authors and authors. Dr. Cooper’s book, Ethical Choices in Research: Managing Data, Writing Reports, and Publishing Results in the Social Sciences (2016), draws from the experience as well as a review the related scholarship. The book goes beyond the proper treatment of human research subjects to examine frequently neglected ethical issues that arise after data has been collected.

           Dr. Cooper served as the Chair of the Department of Psychology & Neuroscience at Duke University from 2009 to2014. He also served as Chair of the Department of Psychological Sciences at the University of Missouri and Director of Duke University’s Program in Education.

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Should Students Have Homework?

harris cooper homework

by Suzanne Capek Tingley, Veteran Educator, M.A. Degree

A student stares down a huge stack of homework.

Look before you leap at giving to much or to little homework.

It used to be that students were the only ones complaining about the practice of assigning homework. For years, teachers and parents thought that homework was a necessary tool when educating children. But studies about the effectiveness of homework have been conflicting and inconclusive, leading some adults to argue that homework should become a thing of the past.

What Research Says about Homework

According to Duke professor Harris Cooper, it's important that students have homework. His meta-analysis of homework studies showed a correlation between completing homework and academic success, at least in older grades. He recommends following a "10 minute rule" : students should receive 10 minutes of homework per day in first grade, and 10 additional minutes each subsequent year, so that by twelfth grade they are completing 120 minutes of homework daily.

harris cooper homework

But his analysis didn't prove that students did better because they did homework; it simply showed a correlation . This could simply mean that kids who do homework are more committed to doing well in school. Cooper also found that some research showed that homework caused physical and emotional stress, and created negative attitudes about learning. He suggested that more research needed to be done on homework's effect on kids.

Further reading: Get Homework Done and Turned In

Some researchers say that the question isn't whether kids should have homework. It's more about what kind of homework students have and how much. To be effective, homework has to meet students' needs. For example, some middle school teachers have found success with online math homework that's adapted to each student's level of understanding. But when middle school students were assigned more than an hour and a half of homework, their math and science test scores went down .

Researchers at Indiana University discovered that math and science homework may improve standardized test grades, but they found no difference in course grades between students who did homework and those who didn't. These researchers theorize that homework doesn't result in more content mastery, but in greater familiarity with the kinds of questions that appear on standardized tests. According to Professor Adam Maltese, one of the study's authors, "Our results hint that maybe homework is not being used as well as it could be."

So while many teachers and parents support daily homework, it's hard to find strong evidence that the long-held practice produces positive results.

Problems with Homework

In an article in Education Week Teacher , teacher Samantha Hulsman said she's frequently heard parents complain that a 30-minute homework assignment turns into a three-hour battle with their kids. Now, she's facing the same problem with her own kids, which has her rethinking her former beliefs about homework. "I think parents expect their children to have homework nightly, and teachers assign daily homework because it's what we've always done," she explained. Today, Hulsman said, it's more important to know how to collaborate and solve problems than it is to know specific facts.

Child psychologist Kenneth Barish wrote in Psychology Today that battles over homework rarely result in a child's improvement in school . Children who don't do their homework are not lazy, he said, but they may be frustrated, discouraged, or anxious. And for kids with learning disabilities, homework is like "running with a sprained ankle. It's doable, but painful."

Barish suggests that parents and kids have a "homework plan" that limits the time spent on homework. The plan should include turning off all devices—not just the student's, but those belonging to all family members.

One of the best-known critics of homework, Alfie Kohn , says that some people wrongly believe "kids are like vending machines—put in an assignment, get out learning." Kohn points to the lack of evidence that homework is an effective learning tool; in fact, he calls it "the greatest single extinguisher of children's curiosity that we have yet invented."

Homework Bans

Last year, the public schools in Marion County, Florida, decided on a no-homework policy for all of their elementary students . Instead, kids read nightly for 20 minutes. Superintendent Heidi Maier said the decision was based on Cooper's research showing that elementary students gain little from homework, but a lot from reading.

Orchard Elementary School in South Burlington, Vermont, followed the same path, substituting reading for homework. The homework policy has four parts : read nightly, go outside and play, have dinner with your family, and get a good night's sleep. Principal Mark Trifilio says that his staff and parents support the idea.

But while many elementary schools are considering no-homework policies, middle schools and high schools have been reluctant to abandon homework. Schools say parents support homework and teachers know it can be helpful when it is specific and follows certain guidelines. For example, practicing solving word problems can be helpful, but there's no reason to assign 50 problems when 10 will do. Recognizing that not all kids have the time, space, and home support to do homework is important, so it shouldn't be counted as part of a student's grade.

Further reading: Balancing Extracurriculars with Homework in High School

So Should Students Have Homework?

Should you ban homework in your classroom? If you teach lower grades, it's possible. If you teach middle or high school, probably not. But all teachers should think carefully about their homework policies. By limiting the amount of homework and improving the quality of assignments, you can improve learning outcomes for your students.

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Suzanne Capek Tingley

Suzanne Capek Tingley started as a high school English/Spanish teacher, transitioned to middle school, and eventually became a principal, superintendent, and adjunct professor in education administration at the State University of New York. She is the author of the funny, but practical book for teachers, How to Handle Difficult Parents (Prufrock Press). Her work has appeared in many publications including Education Week, and her blog, Practical Leadership, was featured on the Scholastic website. She has been a presenter and consultant, and with Magna Publications she developed videos on demand highlighting successful strategies for classroom teachers. Among her honors is a Woman of Distinction Award from the New York State Senate. She is a strong believer that all kids can learn and that teaching requires art, skill, and a good sense of humor.

Does Homework Improve Academic Achievement?

Working on homework

harris cooper homework

Educators should be thrilled by these numbers. Pleasing a majority of parents regarding homework and having equal numbers of dissenters shouting "too much!" and "too little!" is about as good as they can hope for.

But opinions cannot tell us whether homework works; only research can, which is why my colleagues and I have conducted a combined analysis of dozens of homework studies to examine whether homework is beneficial and what amount of homework is appropriate for our children.

The homework question is best answered by comparing students who are assigned homework with students assigned no homework but who are similar in other ways. The results of such studies suggest that homework can improve students' scores on the class tests that come at the end of a topic. Students assigned homework in 2nd grade did better on math, 3rd and 4th graders did better on English skills and vocabulary, 5th graders on social studies, 9th through 12th graders on American history, and 12th graders on Shakespeare.

Less authoritative are 12 studies that link the amount of homework to achievement, but control for lots of other factors that might influence this connection. These types of studies, often based on national samples of students, also find a positive link between time on homework and achievement.

Yet other studies simply correlate homework and achievement with no attempt to control for student differences. In 35 such studies, about 77 percent find the link between homework and achievement is positive. Most interesting, though, is these results suggest little or no relationship between homework and achievement for elementary school students.

Why might that be? Younger children have less developed study habits and are less able to tune out distractions at home. Studies also suggest that young students who are struggling in school take more time to complete homework assignments simply because these assignments are more difficult for them.

harris cooper homework

These recommendations are consistent with the conclusions reached by our analysis. Practice assignments do improve scores on class tests at all grade levels. A little amount of homework may help elementary school students build study habits. Homework for junior high students appears to reach the point of diminishing returns after about 90 minutes a night. For high school students, the positive line continues to climb until between 90 minutes and 2½ hours of homework a night, after which returns diminish.

Beyond achievement, proponents of homework argue that it can have many other beneficial effects. They claim it can help students develop good study habits so they are ready to grow as their cognitive capacities mature. It can help students recognize that learning can occur at home as well as at school. Homework can foster independent learning and responsible character traits. And it can give parents an opportunity to see what's going on at school and let them express positive attitudes toward achievement.

Opponents of homework counter that it can also have negative effects. They argue it can lead to boredom with schoolwork, since all activities remain interesting only for so long. Homework can deny students access to leisure activities that also teach important life skills. Parents can get too involved in homework -- pressuring their child and confusing him by using different instructional techniques than the teacher.

My feeling is that homework policies should prescribe amounts of homework consistent with the research evidence, but which also give individual schools and teachers some flexibility to take into account the unique needs and circumstances of their students and families. In general, teachers should avoid either extreme.

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The Great Homework Debate: What's Getting Lost in the Hype

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Homework - is it an unnecessary evil or a sound and valuable pedagogical practice? The media coverage of the debate often zeroes in on these two seemingly polar opposite views, even though they may not be all that far apart. Homework can be good until - well, until it isn't. Assign too much or the wrong kind (or both) and the law of diminishing returns kicks in, says  Dr. Harris Cooper , professor of psychology and neuroscience at Duke University, r esulting in undue stress for students, aggravation for parents and no academic pay-off. 

But as Cooper, author of "The Battle Over Homework: Common Ground for Administrators, Teachers, and Parents,"  recently told NEA Today, homework levels and parental attitudes haven't really changed dramatically over the years. Cooper also concludes - perhaps a shock of those who are convinced that very little in our classrooms is working as it should - "the vast majority of educators have got it right."  

There's a lot of focus on homework now, but has it been scrutinized so heavily in the past? 

Harris Cooper: Throughout the 20th century, the public battle over homework was quite cyclical. You can go back to World War I or a little after, when it was considered important for kids to exercise their brain like a muscle and that homework was a way to do that. During the 1930s, opinions changed. In the 1950s, people were worried about falling behind the communists, so more homework was needed as a way to speed up our education and technology. During the 1960s, homework fell out of favor because many though it inflicted too much stress on kids. In the 1970s and 1980s, we needed more homework to keep up with the Japanese economically. More recently, as everything about education and teachers is being scrutinized, homework has come into question again.

What's interesting is that the actual percentage of people who support or oppose homework has changed very little over the years. And the actual amount of homework kids are doing has changed very little over the last 65 years.

But haven't we seen an uptick in the amount of homework assigned to elementary students?

HC:  There is a little bit of an uptick in lower grades. But when you look at the actual numbers, we're talking about the difference between an average of 20 minutes and 30 minutes. So you’ll find some people who say the amount of homework being given to 2 nd graders, for example, has increased 50 percent. But If you look at the actual numbers, it's ten more minutes per night.

And probably a driving force behind that is obviously end-of-grade testing and accountability issues. Perhaps more legitimately is the importance of early reading. As they say, in third grade you learn to read, and in fourth grade you read to learn. So this has led to more reading assignments.

While most high school students are still doing approximately the same amount of homework on average, there's a great deal of variation. That's due to choices some kids make about how rigorous an academic program to take and the increased competition over college admissions. So there are a lot of kids out there taking four or five advanced placement and honors classes now, which might not have been the case a while back.

According to the MetLife Foundation national homework survey, 3 out of 5 parents said their kids are getting just the right amount of homework. One said too much and one said too little. That survey is a few years old now but I doubt that's changed.

Does_Homework_Help_Students-

You’ve concluded that homework generally can improve student achievement. At what grade levels do we usually see this effect? 

HC: There's very little correlation between homework and achievement in the early grades. As kids get older, the correlation gets stronger. But there are experimental studies even at the earliest grades that look at skills such as spelling, math facts, etc. where kids are randomly assigned to do homework and not do homework. They show that kids who did the homework performed better.

But we're really talking about correlation here, so we have to be a little careful. It's also worth noting that these correlations with older students are likely caused, not only by homework helping achievement, but also by kids who have higher achievement levels doing more homework.

But at a particular point more homework is not a good thing. You've heard of the "10-Minute Rule," where you multiply a child’s grade by 10 to determine how many minutes you assign per night. This rule fits the data. So 20-minutes for a second grader is where you'd start. In middle schools, it's between 60-90 mins for 6th through 9th graders, about two hours later in high school. When you assign more than these levels, the law of diminishing returns or even negative effects - stress especially - begin to appear.

Have school districts coalesced around the 10-minute rule?

HC:  From my experience, I have never seen a school district that recommends anything that isn’t consistent with the 10-minute rule. They won't use the term "10-minute rule" usually, but they’ll say, primary school grades will be assigned up to 30 mins., grades 4-6 up to an hour, things like that. But If you translate the policy to the 10-minute rule, it’ll be very similar. Nobody has a policy that says you can expect your second-graders to bring home two hours of homework. The only place you'll see a warning about it is in high school: you can expect half an hour a night per academic subject. Again, if the kid is taking AP, expect more.

  What don't we know about homework? Where are the gaps in the research?

HC:  We need to know more about the the differing impacts by subject matter. Regarding the 10-minute rule, one question I am frequently asked is, “Does that include reading?" Generally, the answer would be yes, but if we’re interested in kids' stress level, for example, they are more likely to burn out quicker doing math worksheets and studying vocabulary than if they were doing high-interest reading. So we really need more work on subject matter, on homework quality, on the level of inquisitiveness that it engenders and the way it motivates. Also we need to know more about the use of the Internet, especially as it relates to potential disparities between rich and poor and the ability to research at home.

Parental involvement is a huge homework-related issue . How can educators work with parents to keep their role constructive? 

HC:  Parental involvement is more important in the earlier grades and teachers should try to make sure that parents have the skills to teach the material so to avoid any instructional confusion. Educators should also remind parents to not place great pressure on their child and to model behaviors, especially with young children. For example, when the child is doing math homework, a parent could balance the checkbook to demonstrate how the skill can be used in adult life, or they can they read their own book while their child is reading.

Homework also keeps parents aware of what their child is learning. I've had some very emotional parents come to me about having been told by teachers that their child is struggling, that there might be a learning disability. The parents don't necessarily see it until they see their child work on homework.

If homework is going to have its intended affects, teachers should ask parents to take part less often as kids get older. If support from parents is withdrawn slowly, it can promote autonomous learning - teaching kids that they can learn on their own and they can learn anywhere.

Do you think overall the current debate or controversy over homework has been helpful and what, if anything, should educators take from it?

HC: Well, I recognize that the debate will always be there, but I generally choose to ignore it, or at least the people who, as the old saying goes, use science the same way a drunkard uses a lamp post - more for support than for illumination.

Homework is probably the most complicated pedagogical strategy teachers use because it's open to variations due to child individual differences and the home context. But the vast majority of educators have got it right. They're not going to satisfy everyone, because kids take homework home to different environments and to parents with different expectations. But, like I said before, three in five parents are satisfied and there's one in each direction - too much homework or too little. That probably means teachers are doing their job properly.

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Evaluating the Role of Homework

Winter 2022

By Alison Baran

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Doing Our Homework

A sign of the times, through the pandemic lens.

Readings and Resources

Alison Baran is a fourth grade teacher at The Park School of Baltimore in Maryland. She’s also the lower school new faculty coordinator.  

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Hiring Practices: Developing a Year-Round Model

Independent schools must become more strategic in the way they search and bring on new talent. Looking to enrollment management may provide insights. 

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SEDL merged with the American Institutes for Research (AIR) in 2015. This archived website contains the work of SEDL legacy projects and rich resources from the past 50 years.

Home | SEDL Letter Archive

Does Homework Improve Academic Achievement?: If So, How Much Is Best?

The beginning of a new school year brings with it a reawakening of an old debate regarding the value of homework. Parents who feel their children are overburdened with homework are pitted against educators pressed to improve achievement test scores. According to two recent polls, however, the majority of parents remain satisfied with educators’ homework practices.

Photo of a father reviewing homework with his two children.

A poll conducted for the Associated Press in January 2006 found that about 57% of parents felt their child was assigned about the right amount of homework. Another 23% thought it was too little, and 19% thought it was too much. A survey conducted by MetLife in 2007 found that 87% of parents saw that helping their child with homework was an opportunity for them to talk and spend time together. More than three fourths (78%) did not think homework interfered with family time, and nearly as many (71%) thought that it was not a source of major stress.

Educators should be thrilled with these numbers. Pleasing a majority of parents regarding homework is about as good as they can hope for, even with a fair number of dissenters.

What the Research Says

But opinions cannot tell us whether homework works; only research can. My colleagues and I analyzed dozens of homework studies conducted between 1987 and 2003 to examine whether homework is beneficial and what amount of homework is appropriate for our children (Cooper, Robinson, & Patall, 2006).

The homework question is best answered by comparing students assigned homework with students assigned no homework who are similar in other ways. The results of such studies suggest that homework can improve students’ scores on the class tests that come at the end of a topic. Students assigned homework in second grade did better on the math tests; third and fourth graders did better on English skills and vocabulary tests; fifth graders on social studies tests; ninth through 12th graders on American history tests; and 12th graders on Shakespeare tests. Across five studies, the average student who did homework had a higher unit test score than the students not doing homework.

However, 35 less rigorous (correlational) studies suggest little or no relationship between homework and achievement for elementary school students. The average correlation between time spent on homework and achievement was substantial for secondary school students, but for elementary school students, it hovered around no relationship at all.

Why might that be? Younger children have less developed study habits and are less able to tune out distractions at home. Studies also suggest that young students who are struggling in school take more time to complete homework assignments simply because these assignments are more difficult for them.

How Much Homework?

So, how much homework should students do? The National Parent Teacher Association and the National Education Association have a parents’ guide called Helping Your Child Get the Most Out of Homework. It states, “Most educators agree that for children in grades K–2, homework is more effective when it does not exceed 10–20 minutes each day; older children, in grades 3–6, can handle 30–60 minutes a day; in junior and senior high, the amount of homework will vary by subject.”

Many school district policies state that high school students should expect about 30 minutes of homework for each academic course they take (a bit more for honors or advanced placement courses).

These recommendations are consistent with the conclusions reached by our analysis. Practice assignments do improve scores on class tests at all grade levels. A little amount of homework may help elementary school students build study habits. Homework for junior high students appears to reach the point of diminishing returns after about 90 minutes a night. For high school students, the positive line continues to climb until between 90 minutes and 2.5 hours of homework a night, after which returns diminish (Cooper, 1989; Cooper, Robinson, & Patall, 2006).

Keeping It Balanced

Beyond achievement, proponents of homework argue that it can have many other beneficial effects. They claim it can help students develop good study habits so they are ready to grow as their cognitive capacities mature. It can help students recognize that learning can occur at home as well as at school. It can foster independent learning and responsible character traits. And it can give parents an opportunity to see what’s going on at school and let them express positive attitudes toward achievement.

Opponents of homework counter that it can also have negative effects. They argue it can lead to boredom with schoolwork because all activities remain interesting only for so long. It can deny students access to leisure activities that also teach important life skills. Parents can get too involved in homework—pressuring their child and confusing him or her by using different instructional techniques than the teacher.

My feeling is that homework policies should prescribe amounts of homework consistent with the research evidence, but they should also give individual schools and teachers some flexibility to take into account the unique needs and circumstances of their students and families. In general, teachers should avoid either extreme.

Harris Cooper is a professor of psychology and neuroscience at Duke University, where he also directs the Program in Education, and author of The Battle Over Homework: Common Ground for Administrators, Teachers, and Parents (Corwin Press). He is also a member of the National Partnership for Quality Afterschool Learning’s steering committee.

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Editor Spotlight

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Harris Cooper, PhD

Editor Spotlight: Harris Cooper, PhD

Tell us a bit about your background.

I grew up in New York City and attended SUNY Stony Brook for my undergraduate education. I received my PhD in social psychology from the University of Connecticut in 1975. I was on the faculty at the University of Missouri for many years before moving to Duke University in 2003.

What is your area of research?

My research has followed two paths. The first path concerns research synthesis and research methodology. I was an early adopter of meta-analysis and believe research syntheses ought to be held to the same standards for good science as any other form of research. I have written numerous articles and two books on this methodology. The second path involves the application of social and developmental psychology to issues in educational policy. I research the relationship between time and learning; in particular, how time outside school influences learning. So, for example, my students and I have examined the effects of homework and the school calendar on achievement.

What is your most recent journal-editing experience?

I served as editor for Psychological Bulletin from 2003 through mid-2009. I was also the inaugural coeditor of the Archives of Scientific Psychology , APA’s first open methods, collaborative data-sharing, open-access journal. For six years, I was the chief editorial advisor for APA’s journal publishing program, serving as a resource to the editors of APA’s journals as well as mediating disputes between editors and authors and between authors and authors. I am editor-in-chief of APA’s Handbook of Research Methods in Psychology , now preparing its second edition.

Journal importance

Why is American Psychologist important for the field? What is its relevance to society/public health?

American Psychologist is among the most important journals published by the American Psychological Association. It is APA’s public face, both to its members and the world. Its reach dwarfs any other journal of scientific psychology.

What type of scholarship would you like to see in the journal?

First, I value rigorous, thoughtful, and creative scholarship. I use the term “scholarship” because it encompasses all of the tools psychologists use to study the phenomena that interest and motivate them, including but not limited to quantitative, qualitative, and historical approaches.

What kind of content are you hoping to attract?

The specific content of articles published in a journal like American Psychologist is driven by the interests and concerns of researchers. In turn, their interests are driven by the concerns of our profession and its interface with society. That said, my eyes light up when I see scholarship that breaks through the demarcation between basic and applied/clinical research and theory. The best basic scientists embrace the challenge of addressing why their scholarship should help inform issues confronting society. The best applied/clinical scientists are delighted to address the relationship of their work to basic notions of psychology and its implications for the historic, transcultural understanding of human behavior. Relating basic research to applied problems and vice versa requires scholars to stretch their thinking. This is a challenge they should be excited to take on.

Do you plan changes to the editorial process?

My predecessor, Anne Kazak, did a phenomenal job of raising the bar for scholarship to be published in American Psychologist . I hope to continue down the path that she established. This includes implementing APA’s recommendation that journals adopt the Transparency and Openness Promotion Guidelines developed by the Center for Open Science. American Psychologist will also implement the Open Science Badges Program and the Contributors Role Taxonomy to describe each author’s individual contributions to the work. These are a natural progression that build on Anne’s initiatives.

What challenges, if any, lie ahead for psychological science?

Today, the principal challenge facing psychological science, indeed all sciences, is improving the trust that society places in us and in our prescriptions. This requires that our research and theories be the result of careful, systematic thought and mechanisms for discovery. We need to put our best foot forward when we explain things to the public. Also, we must be open and transparent with regard to how we arrived at the conclusions we draw. For this reason, I am an advocate for the open science movement, that is, for transparency of methods and data analysis in research reports and the sharing of data. Further, I will continue to work with APA to find ways to make the articles published in American Psychologist more readily available to interested readers throughout the world and to those of limited means.

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  1. The Battle over Homework : Common Ground for Administrators, Teachers, and Parents by Harris

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  3. Homework

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  4. Back to school 2015: Is the end of homework near?

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  6. For Parents: Research-Based Tips for the New School Year

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COMMENTS

  1. Duke Study: Homework Helps Students Succeed in School, As Long as There

    The "10-minute rule," Cooper said, is a commonly accepted practice in which teachers add 10 minutes of homework as students progress one grade. In other words, a fourth-grader would be assigned 40 minutes of homework a night, while a high school senior would be assigned about two hours.

  2. Is Homework Good for Kids? Here's What the Research Says

    Cooper's analysis focused on how homework impacts academic achievement—test scores, for example. His report noted that homework is also thought to improve study habits, attitudes toward...

  3. Harris Cooper

    Harris Cooper received his Ph.D. in Social Psychology from the University of Connecticut in 1975. From 1977 to 2003, he was on the faculty at the University of Missouri. In 2003, he moved to Duke University where he is a professor in the Department of Psychology & Neuroscience and served as Director of the Program in Education from 2003 to 2008.

  4. The Battle Over Homework: Common Ground for Administrators, Teachers

    by Harris M. Cooper Hardcover $34.95 Building Thinking Classrooms in Mathematics, Grades K-12: 14 Teaching Practices for Enhancing Learning, Corwin Mathematics by Peter Liljedahl Paperback $30.10 Customers who viewed this item also viewed Rethinking Homework: Best Practices That Support Diverse Needs Cathy Vatterott 12 Paperback

  5. Does Homework Improve Academic Achievement? A Synthesis of Research

    Does Homework Improve Academic Achievement? A Synthesis of Research, 1987-2003 - Harris Cooper, Jorgianne Civey Robinson, Erika A Patall, 2006 Browse by discipline Information for Review of Educational Research Impact Factor: 13.551 5-Year Impact Factor: 20.558 JOURNAL HOMEPAGE SUBMIT PAPER Restricted access Research article

  6. Harris M. Cooper

    Harris M. Cooper Hugo L. Blomquist Distinguished Professor Emeritus of Psychology and Neuroscience Harris Cooper received his Ph.D. in Social Psychology from the University of Connecticut in 1975. From 1977 to 2003, he was on the faculty at the University of Missouri.

  7. Is homework a necessary evil?

    In a review of studies published from 1987 to 2003, Cooper and his colleagues found that homework was linked to better test scores in high school and, to a lesser degree, in middle school. Yet they found only faint evidence that homework provided academic benefit in elementary school ( Review of Educational Research, 2006).

  8. Should Students Have Homework?

    According to Duke professor Harris Cooper, it's important that students have homework. His meta-analysis of homework studies showed a correlation between completing homework and academic success, at least in older grades.

  9. Does Homework Improve Academic Achievement?

    Harris Cooper is professor of psychology and neuroscience at Duke, where he also directs the university's Program in Education, and is author of "The Battle over Homework: Common Ground for Administrators, Teachers, and Parents" (Corwin Press)

  10. ‪Harris Cooper‬

    Harris Cooper. Duke University. Verified email at duke.edu. psychology. Articles Cited by Public access. Title. ... Does homework improve academic achievement? A synthesis of research, 1987-2003. H Cooper, JC Robinson, EA Patall ... H Cooper, B Nye, K Charlton, J Lindsay, S Greathouse. Review of educational research 66 (3), 227-268, 1996. 1664:

  11. Homework

    As Harris Cooper shows in this comprehensive review, only a modest body of scholarly work on the topic of homework has been completed to date, and the knowledge base that it has produced,...

  12. The Great Homework Debate: What's Getting Lost in the Hype

    Harris Cooper: Throughout the 20th century, the public battle over homework was quite cyclical. You can go back to World War I or a little after, when it was considered important for kids to exercise their brain like a muscle and that homework was a way to do that.

  13. Homework (Research on Teaching Monograph Series): Cooper, Harris

    Harris M. Cooper Homework (Research on Teaching Monograph Series) Paperback - January 1, 1989 by Harris Cooper (Author) See all formats and editions Paperback from $39.95 3 Used from $39.95 Book by Cooper, Harris Print length 218 pages Language English Publisher Longman Publishing Group Publication date January 1, 1989 Dimensions

  14. NAIS

    According to Harris Cooper in The Battle Over Homework: Common Ground for Administrators, Teachers, and Parents, "correlational studies suggest the homework-achievement link for children on broader measures of achievement appears to be weak; in fact, it borders on trivial." The belief that we, as a society, have in the effectiveness of ...

  15. Does Homework Improve Academic Achievement?: If So, How Much Is Best

    Harris Cooper is a professor of psychology and neuroscience at Duke University, where he also directs the Program in Education, and author of The Battle Over Homework: Common Ground for Administrators, Teachers, and Parents (Corwin Press). He is also a member of the National Partnership for Quality Afterschool Learning's steering committee.

  16. Homework (1989 edition)

    An edition of Homework (1989) Homework by Harris M. Cooper 0 Ratings 1 Want to read 0 Currently reading 0 Have read Overview View 1 Edition Details Reviews Lists Related Books Publish Date 1989 Publisher Longman Language English Pages 218 Previews available in: English This edition doesn't have a description yet. Can you add one ? Subjects Homework

  17. Homework by Harris M. Cooper

    Homework. Harris M. Cooper. ... First published January 1, 1989. Book details & editions. About the author. Harris M. Cooper 12 books 2 followers. Ratings & ...

  18. Harris Cooper, PhD

    Dr. Harris Cooper, editor of American Psychologist, aims to continue to make the content published in the journal more readily available to interested readers throughout the world and to those of limited means. ... So, for example, my students and I have examined the effects of homework and the school calendar on achievement. What is your most ...

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  21. PDF Logical Effort

    Logical Effort David Harris Page 4 of 38 L E L A N D S T A N F O R D JU NI O R U N I V E R S I T Y O R GANIZ E D 1 8 9 1 Example Ben Bitdiddle is the memory designer for the Motoroil 68W86, an embedded processor for automotive applications. Help Ben design the decoder for a register file: Decoder specification: 16 word register file Each ...

  22. Darlene Cooper, MPH

    Darlene Cooper, MPH Credentialing Supervisor, Program Manager II, Provider Network Operations @ County of Santa Clara