There are three forms of study: full-time, correspondence and amateur (night university).
Correspondence: This form of study is suitable for office workers and candidates with little free time. The school will send you study materials by mail, usually teach yourself at home, give several lectures face to face before the end of the term, and then take a unified exam.
Amateur: Amateur teaching method generally enrolls students in colleges and universities, and arranges classes at night or weekends, which is suitable for on-the-job candidates to apply.
Off-the-job: the way to go to school for off-the-job study after working. Its management mode is the same as that of ordinary colleges and universities. I don't work in the original unit during my study, and I don't take up the rest time on Saturday and Sunday. I have normal and relatively fixed teaching classrooms and management requirements for students, and I have stable winter and summer vacations. Full-time study is suitable for people who don't work, study hard and have no burden of life. At present, there are few schools that carry out full-time study. Please ask the reported school for details.