Not at the time of entry, but after entry. As long as you step into the profession of teacher, the teacher qualification certificate is necessary. Any teacher position needs a teacher qualification certificate, even school counselors need a teacher qualification certificate.

One of my friends is a university teacher with a postgraduate degree. Before joining the job, he didn't have a teacher qualification certificate. In the year of graduation, he saw the recruitment announcement of a local university and then applied for a professional counterpart. Later, because of his outstanding performance in the interview, he directly participated in the interview and successfully joined the job. It takes about three months from the registration of college teachers' qualification certificate to the examination, and some of their new teachers will be organized for pre-job training and designated review materials. After passing the training, most people can pass. Therefore, in his words, it is not difficult to get a college teacher qualification certificate about 1-2 months after joining the company. He now starts as a teaching assistant and usually helps in the office of the school Committee. Relatively speaking, he is not very busy at work and has a lot of free time. He is still a very good career.