The third subject of teacher qualification certificate is the examination of subject knowledge and teaching ability. Subject 3 of teacher qualification certificate is the subject of junior high school and above teacher qualification examination. Subject III of teacher qualification certificate includes Chinese, mathematics, physics, chemistry, biology, history, geography, ideology and morality (politics), English, music, fine arts, sports and health, information technology, history and society, science and other subjects 15. Those who apply for the qualification of cultural teachers in secondary vocational schools take part in the qualification examination for teachers in senior middle schools. Subject 3 includes Chinese, mathematics, physics, chemistry, biology, history, geography, ideology and morality (politics), English, music, fine arts, sports and health, information technology, general technology and other subjects 14. Teachers' qualification is the basic requirement of the state for the staff who specialize in education and teaching, and it is also the prerequisite for citizens to obtain the post of teacher and engage in teacher work. The teacher qualification system is a professional licensing system for teachers implemented by the state.