There is no obvious difference in educational theoretical knowledge between general middle schools and primary schools, and the difference is mainly in subject and professional knowledge. The examination of kindergarten posts is generally based on the theoretical knowledge of preschool education, including preschool education, preschool psychology, preschool professional knowledge and so on. The examination scope of educational theoretical knowledge in primary and secondary schools mainly involves pedagogy, psychology, educational psychology, educational policies and regulations, teachers' professional ethics, education and teaching ability, etc. Among them, it mainly investigates pedagogy, psychology and educational psychology.