Is physical education class optional or designated by the school?

Basically, physical education class in universities is an elective course now. Every time the new semester is about to start, the school will organize courses. The school will have a corresponding website where students can log in to the system. Before that, we will determine the course selection time, and then what we need to do is to start the course selection at the right time. But after all, the courses are limited. Instead of choosing courses, it is better to grab classes, grab a simple and valuable class and have a good semester. It should be no problem to prepare in advance and take good ideas to grab classes, but there will be classes if you don't grab them. After all, there must be some courses that everyone avoids, so there will be no students to choose for a long time, and naturally there will be places. If the course does not meet the number of students prescribed by the school after the course is selected, the school will also intervene, such as canceling some courses and forcibly arranging them.