How much homework is too much? What the research says
India already has an official answer to the homework question, and it is worth every parent knowing. The Ministry of Education's Policy on School Bag 2020 recommends no homework at all up to Class II and a maximum of two hours a week from Classes III to V. For Classes VI to VIII it recommends at most one hour a day, and for the secondary and higher secondary stage at most two hours a day.
These are recommendations, not legal limits. The policy cites the National Curriculum Framework 2005 for them and asks school managements or education departments to issue an advisory to schools. But they are a useful place to start, because the research on homework points the same way: some helps, and more is not always better.
Homework helps, with caveats
One review of the evidence is by Cooper, Robinson and Patall, who in 2006 examined United States homework research published since 1987. They found generally consistent evidence that homework has a positive influence on achievement.
Two details matter for parents. First, the authors noted that every study they reviewed, whatever its design, had design flaws. Second, where studies reported simple correlations between homework and achievement, the link was stronger in Grades 7 to 12 than in kindergarten to Grade 6. The case for homework is stronger for a teenager than for an eight-year-old.
After a point, extra hours stop paying
The OECD looked at the same question through its PISA surveys of 15-year-olds. Across OECD countries in 2012, students reported spending almost 5 hours a week on homework, down from an average of 5.9 hours in 2003. Students in Shanghai-China reported 14 hours a week. Students in Finland and Korea reported less than three.
The OECD's report says evidence from PISA 2009 suggests that after around four hours of homework a week, the additional time invested has a negligible impact on performance. It also says the average hours students spend on homework tends to be unrelated to how well a school system performs overall. Other things, such as the quality of instruction and how schools are organised, matter more.
None of these figures are for Indian students, and four hours a week is not a rule for every child. The point is the shape of the curve. The first hours do the work.
Heavy loads and stress go together
What happens at the far end of that curve? Galloway, Conner and Pope surveyed 4,317 students in 10 high-performing high schools in upper middle class communities in the United States. These students averaged more than 3 hours of homework a night.
Students who did more hours of homework were more engaged in school. They also reported more academic stress, more physical health problems and less balance in their lives. This is survey data from privileged American schools, so it shows an association, not proof that homework caused the problems. Indian parents of board-exam students may still find the pattern familiar.
Homework does not land equally
The OECD found one more thing. In 2012, socio-economically advantaged 15-year-olds in OECD countries spent an average of 5.7 hours a week on homework, while disadvantaged students spent 4.1 hours. The OECD says homework may have the unintended consequence of widening the performance gap between students from different backgrounds, while noting that PISA cannot establish cause and effect.
A quiet room, a free evening and a parent who can help are not evenly distributed. Homework assumes all three.
A rough yardstick, and its limits
In the United States, the National PTA and the National Education Association support what is called the 10-minute homework guideline: about 10 minutes of homework a night for each grade level. It is a rule of thumb, not a law, not a research-derived cut-off and not an Indian rule. Many teachers and parents point out that the quality of the homework matters more than the time spent, and that the guideline makes no allowance for students who need more or less time.
What a parent can actually do
Start by measuring. For one ordinary week, note how long homework really takes your child, and set that beside the School Bag Policy figures for their class. If a Class IV child is doing two hours a night, the gap between practice and the government's own recommendation is worth raising with the school.
Then look at what the hours are buying. If the work is practice your child can do alone, it is probably useful. If it regularly needs you to teach the topic, the task is doing the classroom's job.
Finally, watch for the signs the American study described: stress about school, physical complaints, and a life with no room for anything else. Those are reasons to talk to the teacher, not reasons to push harder.
The research does not say homework is useless. It suggests that the first hours count for most, that the link with achievement is stronger for older students, and that more hours can go together with more stress and less balance in a child's life. A parent who knows that, and knows what the policy recommends, can ask a school a better question than "why so much?". The better question is "what is this hour for?".