Japanese schools do give a lot of homework compared to other countries, with elementary school students receiving 30-60 minutes per day and high school students receiving 3-4 hours or more. The purpose of homework is to reinforce what students have learned in class and develop their independent study skills. While excessive amounts of homework can lead to physical and mental health problems for some students, moderate amounts can improve academic performance and study habits. Some Japanese schools have experimented with alternative forms of homework, such as project-based learning or online assignments, and technology has made it easier for students to complete their homework online or access digital resources outside of school hours.