College degree can apply for kindergarten, primary school and junior high school teacher qualification certificate. However, since you are studying preschool education, it may be more appropriate to obtain the qualification certificate of kindergarten and primary school teachers. After all, it will be difficult to take one more subject in the junior high school teacher qualification examination. If you have no practical experience and your major is not right, there will be few opportunities for future employment.
Generally, public junior high schools require teachers to graduate from undergraduate courses (some require graduate degrees) and have a teaching experience of 1-3 years, with similar or similar professional requirements.