Researchers at the University of Oviedo studied the maths and science homework and test results of 7,451 adolescents with an average age of around 13. They found a relationship between the amount of homework completed and children’s attainment. But the authors acknowledge they can’t say definitively that one hour of homework a night in total actually causes better test results.

Previous research in this area is both inconsistent and inconclusive. Some has shown the positive effects of homework and some its negative effects. In 2012, the Guardian reported on Department of Education research showing that two to three hours per day produced greater effects on achieving the highest results. In 2014, research at Stanford University found that too much homework can have a negative impact on children.

Homework can help to establish a routine and to develop independent learning skills that will be useful for professional life. Conversely, it could be argued that working at home in the evenings is the beginning of an unhealthy work-life balance and that there are academic drawbacks in studying instead of sleeping.