It is very difficult to compile the teacher's exam, and the competition pressure is great. There are a large number of applicants, and the preparation of examination teachers must have teacher qualification certificates, which need to meet the academic requirements, school requirements and work experience requirements in the recruitment information.

In-service teachers are career staff, that is, in-service teachers are staff of public institutions, while out-of-service teachers are temporary or contract workers. Teachers, as staff members of public institutions, sign a five-year contract according to relevant regulations and enjoy the working treatment of public institutions.