Legal analysis: 1. Clear the after-school delay service time from primary school to high school to avoid fragmentation. 2. During the delayed service after class, the students' physical exercise time is not less than 30 minutes. 3. Clarify the scope of after-school delay service. 4. Clear the charging standard and charging purpose.

Legal basis: Guiding Opinions of the General Office of the Ministry of Education on Doing a Good Job in After-school Service for Primary and Secondary School Students. Whether primary and secondary school students participate in after-school services is voluntarily chosen by parents. To carry out after-school services in primary and secondary schools, parents should be fully consulted in advance, and parents should be actively informed of the service methods, service contents and safeguard measures, and a working mechanism of parents' application, class review and unified implementation by schools should be established. After-school services should give priority to the groups that are in urgent need of services, such as left-behind children and migrant children of migrant workers. Primary and secondary schools should take the initiative to remind parents that parents should choose qualified and guaranteed after-school service institutions if they require it to be implemented separately outside the school.