How can I go to school as a teacher?

You don't need to take the postgraduate entrance examination. The longer you wait, the greater the employment pressure. First go to the teacher training school in your area to register for the teacher qualification certificate. There will tell you what to prepare and when to take the exam. When you get the certificate, you can apply in a suitable school. There is a shortage of English teachers in schools now. I am in a school in Dalian, and I am recruiting English teachers recently. Moreover, you should be fully prepared psychologically and professionally, because ordinary schools want you to give lectures, so you should start learning some theories of the subjects you want to teach in the new curriculum standard now, and then apply them to practice. I wish you success.