how does homework negatively affect students physical health

• Second Opinion
• Research & Innovation
• Patients & Families
• Health Professionals
• Recently Visited
• Segunda opinión
• Refer a patient
• MyChart Login

Healthier, Happy Lives Blog

Sort articles by..., sort by category.

• Celebrating Volunteers
• Community Outreach
• Construction Updates
• Family-Centered Care
• Healthy Eating
• Heart Center
• Interesting Things
• Mental Health
• Patient Stories
• Research and Innovation
• Safety Tips
• Sustainability
• World-Class Care

About Our Blog

• Back-to-School
• Pediatric Technology

Latest Posts

• Remembering Willie Mays
• ‘Inside Out 2’ Premiere Brings All the Emotions to Kids at Packard Children’s, Especially Joy
• Gaps in Pediatric Obesity Treatment Need Attention, Especially From an Equity Perspective
• When to Take Your Child to Your Pediatrician for Stomach Issues
• Raising Awareness of the Gift of Life at San Francisco Giants Games for 25 Years

Health Hazards of Homework

March 18, 2014 | Julie Greicius Pediatrics .

A new study by the Stanford Graduate School of Education and colleagues found that students in high-performing schools who did excessive hours of homework “experienced greater behavioral engagement in school but also more academic stress, physical health problems, and lack of balance in their lives.”

Those health problems ranged from stress, headaches, exhaustion, sleep deprivation, weight loss and stomach problems, to psycho-social effects like dropping activities, not seeing friends or family, and not pursuing hobbies they enjoy.

In the Stanford Report story about the research, Denise Pope , a senior lecturer at the Stanford Graduate School of Education and a co-author of the  study published in the  Journal of Experimental Education , says, “Our findings on the effects of homework challenge the traditional assumption that homework is inherently good.”

The study was based on survey data from a sample of 4,317 students from 10 high-performing high schools in California communities in which median household income exceeded $90,000. Of the students surveyed, homework volume averaged about 3.1 hours each night.

“It is time to re-evaluate how the school environment is preparing our high school student for today’s workplace,” says Neville Golden, MD , chief of adolescent medicine at Stanford Medicine Children’s Health and a professor at the School of Medicine. “This landmark study shows that excessive homework is counterproductive, leading to sleep deprivation, school stress and other health problems. Parents can best support their children in these demanding academic environments by advocating for them through direct communication with teachers and school administrators about homework load.”

Related Posts

Top-ranked group group in Los Gatos, Calif., is now a part of one of the…

The Stanford Medicine Children’s Health network continues to grow with our newest addition, Town and…

• Julie Greicius
• more by this author...

Connect with us:

Download our App:

ABOUT STANFORD MEDICINE CHILDREN'S HEALTH

• Leadership Team
• Vision, Mission & Values
• The Stanford Advantage
• Government and Community Relations

LUCILE PACKARD FOUNDATION FOR CHILDREN'S HEALTH

• Get Involved
• Volunteering Services
• Auxiliaries & Affiliates
• Our Hospital
• Send a Greeting Card
• New Hospital
• Refer a Patient
• Pay Your Bill

Also Find Us on:

• Notice of Nondiscrimination
• Terms of Use
• Privacy Policy
• Code of Conduct
• Price Transparency
• Stanford School of Medicine
• Stanford Health Care
• Stanford University

• Future Students
• Current Students
• Faculty/Staff

News and Media

• News & Media Home
• Research Stories
• School's In
• In the Media

You are here

More than two hours of homework may be counterproductive, research suggests.

A Stanford education researcher found that too much homework can negatively affect kids, especially their lives away from school, where family, friends and activities matter.   "Our findings on the effects of homework challenge the traditional assumption that homework is inherently good," wrote Denise Pope , a senior lecturer at the Stanford Graduate School of Education and a co-author of a study published in the Journal of Experimental Education .   The researchers used survey data to examine perceptions about homework, student well-being and behavioral engagement in a sample of 4,317 students from 10 high-performing high schools in upper-middle-class California communities. Along with the survey data, Pope and her colleagues used open-ended answers to explore the students' views on homework.   Median household income exceeded $90,000 in these communities, and 93 percent of the students went on to college, either two-year or four-year.   Students in these schools average about 3.1 hours of homework each night.   "The findings address how current homework practices in privileged, high-performing schools sustain students' advantage in competitive climates yet hinder learning, full engagement and well-being," Pope wrote.   Pope and her colleagues found that too much homework can diminish its effectiveness and even be counterproductive. They cite prior research indicating that homework benefits plateau at about two hours per night, and that 90 minutes to two and a half hours is optimal for high school.   Their study found that too much homework is associated with:   • Greater stress : 56 percent of the students considered homework a primary source of stress, according to the survey data. Forty-three percent viewed tests as a primary stressor, while 33 percent put the pressure to get good grades in that category. Less than 1 percent of the students said homework was not a stressor.   • Reductions in health : In their open-ended answers, many students said their homework load led to sleep deprivation and other health problems. The researchers asked students whether they experienced health issues such as headaches, exhaustion, sleep deprivation, weight loss and stomach problems.   • Less time for friends, family and extracurricular pursuits : Both the survey data and student responses indicate that spending too much time on homework meant that students were "not meeting their developmental needs or cultivating other critical life skills," according to the researchers. Students were more likely to drop activities, not see friends or family, and not pursue hobbies they enjoy.   A balancing act   The results offer empirical evidence that many students struggle to find balance between homework, extracurricular activities and social time, the researchers said. Many students felt forced or obligated to choose homework over developing other talents or skills.   Also, there was no relationship between the time spent on homework and how much the student enjoyed it. The research quoted students as saying they often do homework they see as "pointless" or "mindless" in order to keep their grades up.   "This kind of busy work, by its very nature, discourages learning and instead promotes doing homework simply to get points," said Pope, who is also a co-founder of Challenge Success , a nonprofit organization affiliated with the GSE that conducts research and works with schools and parents to improve students' educational experiences..   Pope said the research calls into question the value of assigning large amounts of homework in high-performing schools. Homework should not be simply assigned as a routine practice, she said.   "Rather, any homework assigned should have a purpose and benefit, and it should be designed to cultivate learning and development," wrote Pope.   High-performing paradox   In places where students attend high-performing schools, too much homework can reduce their time to foster skills in the area of personal responsibility, the researchers concluded. "Young people are spending more time alone," they wrote, "which means less time for family and fewer opportunities to engage in their communities."   Student perspectives   The researchers say that while their open-ended or "self-reporting" methodology to gauge student concerns about homework may have limitations – some might regard it as an opportunity for "typical adolescent complaining" – it was important to learn firsthand what the students believe.   The paper was co-authored by Mollie Galloway from Lewis and Clark College and Jerusha Conner from Villanova University.

Clifton B. Parker is a writer at the Stanford News Service .

More Stories

⟵ Go to all Research Stories

Get the Educator

Subscribe to our monthly newsletter.

Stanford Graduate School of Education

482 Galvez Mall Stanford, CA 94305-3096 Tel: (650) 723-2109

• Contact Admissions
• GSE Leadership
• Site Feedback
• Web Accessibility
• Career Resources
• Faculty Open Positions
• Explore Courses
• Academic Calendar
• Office of the Registrar
• Cubberley Library
• StanfordWho
• StanfordYou

Improving lives through learning

• Stanford Home
• Maps & Directions
• Search Stanford
• Emergency Info
• Terms of Use
• Non-Discrimination
• Accessibility

© Stanford University , Stanford , California 94305 .

Is it time to get rid of homework? Mental health experts weigh in.

It's no secret that kids hate homework. And as students grapple with an ongoing pandemic that has had a wide range of mental health impacts, is it time schools start listening to their pleas about workloads?

Some teachers are turning to social media to take a stand against homework. 

Tiktok user @misguided.teacher says he doesn't assign it because the "whole premise of homework is flawed."

For starters, he says, he can't grade work on "even playing fields" when students' home environments can be vastly different.

"Even students who go home to a peaceful house, do they really want to spend their time on busy work? Because typically that's what a lot of homework is, it's busy work," he says in the video that has garnered 1.6 million likes. "You only get one year to be 7, you only got one year to be 10, you only get one year to be 16, 18."

Mental health experts agree heavy workloads have the potential do more harm than good for students, especially when taking into account the impacts of the pandemic. But they also say the answer may not be to eliminate homework altogether.

Emmy Kang, mental health counselor at Humantold , says studies have shown heavy workloads can be "detrimental" for students and cause a "big impact on their mental, physical and emotional health."

"More than half of students say that homework is their primary source of stress, and we know what stress can do on our bodies," she says, adding that staying up late to finish assignments also leads to disrupted sleep and exhaustion.

Cynthia Catchings, a licensed clinical social worker and therapist at Talkspace , says heavy workloads can also cause serious mental health problems in the long run, like anxiety and depression. 

And for all the distress homework  can cause, it's not as useful as many may think, says Dr. Nicholas Kardaras, a psychologist and CEO of Omega Recovery treatment center.

"The research shows that there's really limited benefit of homework for elementary age students, that really the school work should be contained in the classroom," he says.

For older students, Kang says, homework benefits plateau at about two hours per night. 

"Most students, especially at these high achieving schools, they're doing a minimum of three hours, and it's taking away time from their friends, from their families, their extracurricular activities. And these are all very important things for a person's mental and emotional health."

Catchings, who also taught third to 12th graders for 12 years, says she's seen the positive effects of a no-homework policy while working with students abroad.

"Not having homework was something that I always admired from the French students (and) the French schools, because that was helping the students to really have the time off and really disconnect from school," she says.

The answer may not be to eliminate homework completely but to be more mindful of the type of work students take home, suggests Kang, who was a high school teacher for 10 years.

"I don't think (we) should scrap homework; I think we should scrap meaningless, purposeless busy work-type homework. That's something that needs to be scrapped entirely," she says, encouraging teachers to be thoughtful and consider the amount of time it would take for students to complete assignments.

The pandemic made the conversation around homework more crucial 

Mindfulness surrounding homework is especially important in the context of the past two years. Many students will be struggling with mental health issues that were brought on or worsened by the pandemic , making heavy workloads even harder to balance.

"COVID was just a disaster in terms of the lack of structure. Everything just deteriorated," Kardaras says, pointing to an increase in cognitive issues and decrease in attention spans among students. "School acts as an anchor for a lot of children, as a stabilizing force, and that disappeared."

But even if students transition back to the structure of in-person classes, Kardaras suspects students may still struggle after two school years of shifted schedules and disrupted sleeping habits.

"We've seen adults struggling to go back to in-person work environments from remote work environments. That effect is amplified with children because children have less resources to be able to cope with those transitions than adults do," he explains.

'Get organized' ahead of back-to-school

In order to make the transition back to in-person school easier, Kang encourages students to "get good sleep, exercise regularly (and) eat a healthy diet."

To help manage workloads, she suggests students "get organized."

"There's so much mental clutter up there when you're disorganized. ... Sitting down and planning out their study schedules can really help manage their time," she says.

Breaking up assignments can also make things easier to tackle.

"I know that heavy workloads can be stressful, but if you sit down and you break down that studying into smaller chunks, they're much more manageable."

If workloads are still too much, Kang encourages students to advocate for themselves.

"They should tell their teachers when a homework assignment just took too much time or if it was too difficult for them to do on their own," she says. "It's good to speak up and ask those questions. Respectfully, of course, because these are your teachers. But still, I think sometimes teachers themselves need this feedback from their students."

More: Some teachers let their students sleep in class. Here's what mental health experts say.

More: Some parents are slipping young kids in for the COVID-19 vaccine, but doctors discourage the move as 'risky'

Homework could have an impact on kids’ health. Should schools ban it?

Professor of Education, Penn State

Disclosure statement

Gerald K. LeTendre has received funding from the National Science Foundation and the Spencer Foundation.

Penn State provides funding as a founding partner of The Conversation US.

View all partners

Reformers in the Progressive Era (from the 1890s to 1920s) depicted homework as a “sin” that deprived children of their playtime . Many critics voice similar concerns today.

Yet there are many parents who feel that from early on, children need to do homework if they are to succeed in an increasingly competitive academic culture. School administrators and policy makers have also weighed in, proposing various policies on homework .

So, does homework help or hinder kids?

For the last 10 years, my colleagues and I have been investigating international patterns in homework using databases like the Trends in Mathematics and Science Study (TIMSS) . If we step back from the heated debates about homework and look at how homework is used around the world, we find the highest homework loads are associated with countries that have lower incomes and higher social inequality.

Does homework result in academic success?

Let’s first look at the global trends on homework.

Undoubtedly, homework is a global phenomenon ; students from all 59 countries that participated in the 2007 Trends in Math and Science Study (TIMSS) reported getting homework. Worldwide, only less than 7% of fourth graders said they did no homework.

TIMSS is one of the few data sets that allow us to compare many nations on how much homework is given (and done). And the data show extreme variation.

For example, in some nations, like Algeria, Kuwait and Morocco, more than one in five fourth graders reported high levels of homework. In Japan, less than 3% of students indicated they did more than four hours of homework on a normal school night.

TIMSS data can also help to dispel some common stereotypes. For instance, in East Asia, Hong Kong, Taiwan and Japan – countries that had the top rankings on TIMSS average math achievement – reported rates of heavy homework that were below the international mean.

In the Netherlands, nearly one out of five fourth graders reported doing no homework on an average school night, even though Dutch fourth graders put their country in the top 10 in terms of average math scores in 2007.

Going by TIMSS data, the US is neither “ A Nation at Rest” as some have claimed, nor a nation straining under excessive homework load . Fourth and eighth grade US students fall in the middle of the 59 countries in the TIMSS data set, although only 12% of US fourth graders reported high math homework loads compared to an international average of 21%.

So, is homework related to high academic success?

At a national level, the answer is clearly no. Worldwide, homework is not associated with high national levels of academic achievement .

But, the TIMSS can’t be used to determine if homework is actually helping or hurting academic performance overall , it can help us see how much homework students are doing, and what conditions are associated with higher national levels of homework.

We have typically found that the highest homework loads are associated with countries that have lower incomes and higher levels of social inequality – not hallmarks that most countries would want to emulate.

Impact of homework on kids

TIMSS data also show us how even elementary school kids are being burdened with large amounts of homework.

Almost 10% of fourth graders worldwide (one in 10 children) reported spending multiple hours on homework each night. Globally, one in five fourth graders report 30 minutes or more of homework in math three to four times a week.

These reports of large homework loads should worry parents, teachers and policymakers alike.

Empirical studies have linked excessive homework to sleep disruption , indicating a negative relationship between the amount of homework, perceived stress and physical health.

What constitutes excessive amounts of homework varies by age, and may also be affected by cultural or family expectations. Young adolescents in middle school, or teenagers in high school, can study for longer duration than elementary school children.

But for elementary school students, even 30 minutes of homework a night, if combined with other sources of academic stress, can have a negative impact . Researchers in China have linked homework of two or more hours per night with sleep disruption .

Even though some cultures may normalize long periods of studying for elementary age children, there is no evidence to support that this level of homework has clear academic benefits . Also, when parents and children conflict over homework, and strong negative emotions are created, homework can actually have a negative association with academic achievement.

Should there be “no homework” policies?

Administrators and policymakers have not been reluctant to wade into the debates on homework and to formulate policies . France’s president, Francois Hollande, even proposed that homework be banned because it may have inegaliatarian effects.

However, “zero-tolerance” homework policies for schools, or nations, are likely to create as many problems as they solve because of the wide variation of homework effects. Contrary to what Hollande said, research suggests that homework is not a likely source of social class differences in academic achievement .

Homework, in fact, is an important component of education for students in the middle and upper grades of schooling.

Policymakers and researchers should look more closely at the connection between poverty, inequality and higher levels of homework. Rather than seeing homework as a “solution,” policymakers should question what facets of their educational system might impel students, teachers and parents to increase homework loads.

At the classroom level, in setting homework, teachers need to communicate with their peers and with parents to assure that the homework assigned overall for a grade is not burdensome, and that it is indeed having a positive effect.

Perhaps, teachers can opt for a more individualized approach to homework. If teachers are careful in selecting their assignments – weighing the student’s age, family situation and need for skill development – then homework can be tailored in ways that improve the chance of maximum positive impact for any given student.

I strongly suspect that when teachers face conditions such as pressure to meet arbitrary achievement goals, lack of planning time or little autonomy over curriculum, homework becomes an easy option to make up what could not be covered in class.

Whatever the reason, the fact is a significant percentage of elementary school children around the world are struggling with large homework loads. That alone could have long-term negative consequences for their academic success.

• Trends in Mathematics and Science Study (TIMSS)
• Elementary school
• Academic success

Postdoctoral Research Fellowship

Health Safety and Wellbeing Advisor

Social Media Producer

Dean (Head of School), Indigenous Knowledges

Senior Research Fellow - Curtin Institute for Energy Transition (CIET)

Opinion | Social-Emotional Learning

If we’re serious about student well-being, we must change the systems students learn in, here are five steps high schools can take to support students' mental health., by tim klein and belle liang     oct 14, 2022.

Shutterstock / SvetaZi

This article is part of the guide: Making Sense of K-12 Student Mental Health.

Educators and parents started this school year with bated breath. Last year’s stress led to record levels of teacher burnout and mental health challenges for students.

Even before the pandemic, a mental health crisis among high schoolers loomed. According to a survey administered by the Centers for Disease Control and Prevention in 2019, 37 percent of high school students said they experienced persistent sadness or hopelessness and 19 percent reported suicidality. In response, more than half of all U.S. states mandated that schools have a mental health curriculum or include mental health in their standards .

As mental health professionals and co-authors of a book about the pressure and stress facing high school students, we’ve spent our entire careers supporting students’ mental health. Traditionally, mental health interventions are individualized and they focus on helping students manage and change their behaviors to cope with challenges they’re facing. But while working with schools and colleges across the globe as we conducted research for our book , we realized that most interventions don’t address systemic issues causing mental health problems in the first place.

It’s time we acknowledge that our education systems are directly contributing to the youth mental health crisis. And if we are serious about student well-being, we must change the systems they learn in.

Here are five bold steps that high schools can take to boost mental health.

Limit Homework or Make it Optional

Imagine applying for a job, and the hiring manager informs you that in addition to a full workday in the office, you’ll be assigned three more hours of work every night. Does this sound like a healthy work-life balance? Most adults would consider this expectation ridiculous and unsustainable. Yet, this is the workload most schools place on high school students.

Research shows that excessive homework leads to increased stress, physical health problems and a lack of balance in students' lives. And studies have shown that more than two hours of daily homework can be counterproductive , yet many teachers assign more.

Homework proponents argue that homework improves academic performance. Indeed, a meta-analysis of research on this issue found a correlation between homework and achievement. But correlation isn’t causation. Does homework cause achievement or do high achievers do more homework? While it’s likely that homework completion signals student engagement, which in turn leads to academic achievement, there’s little evidence to suggest that homework itself improves engagement in learning.

Another common argument is that homework helps students develop skills related to problem-solving, time-management and self-direction. But these skills can be explicitly taught during the school day rather than after school.

Limiting homework or moving to an optional homework policy not only supports student well-being, but it can also create a more equitable learning environment. According to the American Psychological Association, students from more affluent families are more likely to have access to resources such as devices, internet, dedicated work space and the support necessary to complete their work successfully—and homework can highlight those inequities .

Whether a school limits homework or makes it optional, it’s critical to remember that more important than the amount of homework assigned, is designing the type of activities that engage students in learning. When students are intrinsically motivated to do their homework, they are more engaged in the work, which in turn is associated with academic achievement.

Cap the Number of APs Students Can Take

Advanced Placement courses give students a taste of college-level work and, in theory, allow them to earn college credits early. Getting good grades on AP exams is associated with higher GPAs in high school and success in college, but the research tends to be correlational rather than causational.

In 2008, a little over 180,000 students took three or more AP exams. By 2018, that number had ballooned to almost 350,000 students .

However, this expansion has come at the expense of student well-being.

Over the years, we’ve heard many students express that they feel pressure to take as many AP classes as possible, which overloads them with work. That’s troubling because studies show that students who take AP classes and exams are twice as likely to report adverse physical and emotional health .

AP courses and exams also raise complex issues of equity. In 2019, two out of three Harvard freshmen reported taking AP Calculus in high school, according to Jeff Selingo, author of “ Who Gets In and Why: A Year Inside College Admissions ,” yet only half of all high schools in the country offer the course. And opportunity gaps exist for advanced coursework such as AP courses and dual enrollment, with inequitable distribution of funding and support impacting which students are enrolling and experiencing success. According to the Center for American Progress, “National data from the Civil Rights Data Collection show that students who are Black, Indigenous, and other non-Black people of color (BIPOC) are not enrolled in AP courses at rates comparable to their white and Asian peers and experience less success when they are—and the analysis for this report finds this to be true even when they attend schools with similar levels of AP course availability.”

Limiting the number of AP courses students take can protect mental health and create a more equitable experience for students.

Eliminate Class Rankings

In a study we conducted about mental health problems among high school girls, we found that a primary driver of stress was their perception of school as a hypercompetitive, zero-sum game where pervasive peer pressure to perform reigns supreme.

Class rankings fuel these cutthroat environments. They send a toxic message to young people: success requires doing better than your peers.

Ranking systems help highly selective colleges decide which students to admit or reject for admission. The purpose of high school is to develop students to their own full potential, rather than causing them to fixate on measuring up to others. Research shows that ranking systems undercut students’ learning and damage social relationships by turning peers into opponents.

Eliminating class rankings sends a powerful message to students that they are more than a number.

Become an Admission Test Objector

COVID-19 ushered in the era of test-optional admissions. De-centering standardized tests in the college application process is unequivocally a good thing. Standardized tests don’t predict student success in college , they only widen the achievement gap between privileged and underprivileged students and damage students' mental health .

Going “test optional” is an excellent first step, but it's not enough.

Even as more colleges have made tests optional, affluent students submit test scores at a higher rate than their lower-income peers and are admitted at higher rates , suggesting that testing still gives them an edge.

High schools must adhere to standardized test mandates, but they don’t have to endorse them. They can become test objectors by publicly proclaiming that these tests hold no inherent value. They can stop teaching to the test and educate parents on why they are doing so. Counseling departments can inform colleges that their school is a test objector so admission teams won’t penalize students.

Of course, students and families will still find ways to wield these tests as a competitive advantage. Over time, the more schools and educators unite to denounce these tests, the less power they will hold over students and families.

Big change starts with small steps.

Stand For What You Value

Critics may argue that such policies might hurt student outcomes. How will colleges evaluate school rigor if we limit AP courses and homework? How will students demonstrate their merits without class rankings and standardized test scores?

The truth is, the best school systems in the world succeed without homework, standardized test scores or an obsession with rigorous courses. And many U.S. schools have found creative and empowering ways to showcase student merit beyond rankings and test scores.

If we aren’t willing to change policies and practices that have been shown to harm students’ well-being, we have to ask ourselves: Do we really value mental health?

Thankfully, it doesn’t have to be an either/or scenario: We can design school systems that help students thrive academically and psychologically.

Belle Liang and Tim Klein are mental health professionals and co-authors of “How To Navigate Life: The New Science of Finding Your Way in School, Career and Life.”

Making Sense of K-12 Student Mental Health

Tackling the Youth Mental Health Crisis Head-On

By aaliyah a. samuel.

Adolescents Need More Proactive, Preventative Mental Health Supports in School

By sara potler lahayne.

Coronavirus

Kids’ mental health is in crisis. schools can get them help through a $1 billion fund, by nadia tamez-robledo.

When Student Anxiety Gets in the Way of Attending School

By daniel mollenkamp, more from edsurge.

Early Learning

Home visiting programs aren’t just for families. they can support child care providers too., by emily tate sullivan.

Inclusive by Design: Sharing Insights for Crafting Accessible Conferences

By amy lomellini.

AI Might Save Teachers Time. But What Is the Cost?

By evi wusk.

Artificial Intelligence

Latest ai announcements mean another big adjustment for educators, by jeffrey r. young.

Journalism that ignites your curiosity about education.

EdSurge is an editorially independent project of and

• Product Index
• Write for us
• Advertising

FOLLOW EDSURGE

© 2024 All Rights Reserved