Most students don't attend classes and use their spare time to teach themselves, which has something to do with the teaching mode of universities. The main reasons are as follows:

The speed of university teachers' lectures is relatively fast, and they are basically jumping, with little basic content, which most college students can't digest at all in class, so many college students only remember the key points emphasized by teachers in class and digest them slowly.

Second, college students generally have strong self-learning ability, and there are many courses in universities. Many subjects in class are boring for students, so they are not interested and don't want to listen. However, after all, these courses require exams, and students will study consciously after class, so that they can pass the exam smoothly.

Third, some college students have a hard time in high school, but they will relax when they get to college. After all, the university relies on self-discipline, and the teacher will not stare at you at any time. These students don't want to attend classes, and they start to worry as the exam approaches. They go to the library to read books every day, basically cold turkeys.