This depends on you. If you study hard and consciously, and have a strong learning ability, you can pass your own study without having to report for a training class at all. If you don't have too much consciousness, don't really want to study, don't know how to study, and don't know how to summarize the key points by yourself, I suggest you sign up for a class to study. After all, it will be better to have a teacher to take you to study, and your self-control ability is too poor. You signed up for a training course in the Teachers College.