It is mandatory until three o'clock. Official website, a new textbook for senior high schools in Shanghai, introduced that required courses must reach required level 3, which is a mandatory requirement. Compulsory courses refer to the courses that middle school students must take. It usually includes public courses, basic courses and professional courses. Shanghai Middle School Shanghai Middle School was founded in 1865 Longmen Academy. Adhering to the tenet of "storing talents for national use", it has trained a large number of outstanding talents for national development and national rejuvenation.