1. School policy: Different schools have different suspension policies. Some schools allow students to apply for suspension from school under certain circumstances, such as illness, family emergencies, and taking important exams.
2. Curriculum arrangement: If the students' curriculum arrangement is tight, such as some experimental classes or courses that require a specific time, suspension of classes will have a great impact on students' learning. In this case, the school will examine and approve the application for suspension more strictly.
3. Special circumstances such as epidemic situation: In some special circumstances, such as epidemic situation and natural disasters, the school will adjust the suspension policy according to the actual situation. For example, the school is closed, and students need to apply for suspension to cooperate with the epidemic prevention and control.