Middle school education is in the middle stage of primary education and university education in the whole school education system, and it is the link between the preceding and the following. It is a stage of differentiation and development for school-age teenagers. Middle school education is the continuation of primary school education, and it is the preparatory stage for entering institutions of higher learning or transferring to other middle schools; It is a learning stage to prepare for employment for junior and senior high school students who are temporarily unable to further their studies. The target of secondary school education is teenagers aged between 1 1,12-17 and 18. They are in the turning point of rapid physical and mental development and mutation, experiencing the critical period of rapid acquisition of knowledge and rapid growth of talents, and the initial formation of world outlook, outlook on life and values.

Knowledge with secondary education is a necessary condition for qualified modern producers, as well as for modern civilization and social life. In this sense, middle school education plays a vital role in the construction of material civilization and spiritual civilization of socialist modernization.