Teacher Linyi can take the exam without getting a diploma.

You have to graduate to take the exam, and if you are a non-normal major and have no teacher qualification certificate, you can't take the exam for teacher recruitment. Now there are requirements for recruitment, first, education, second, age, third, experience, and fourth, teachers' qualification certificates for corresponding positions must be available. So if you are optimistic about this teacher recruitment, all other conditions are met, and you only need the teacher qualification certificate, then you can go to the postgraduate entrance examination before you graduate.