Legal basis: Article 2 of the Notice of the General Office of the Ministry of Education on Further Strengthening the Sleep Management of Primary and Secondary School Students stipulates the requirements for students' sleep time. According to the characteristics of physical and mental development of students of different ages, the sleep time of primary school students should reach 10 hour, junior high school students should reach 9 hours, and senior high school students should reach 8 hours. Schools, families and relevant parties should work together to ensure adequate sleep time for primary and secondary school students.