It's good. Definitely worth reading. First of all, the exam is very strict, you have to cross the line, and the interview is ok, which is relatively easy. Once you see it, it's hard. You clock in in class and clock out after class. Basically, you are fixed at school on weekends. You have no time to do other things, and the quality of your study is relatively high. You are all good teachers, and students basically love learning. It is a good way to improve academic qualifications after work.