Secondary education stage. High school is a senior high school. In China, middle schools are divided into junior middle schools and senior middle schools, which belong to the category of secondary education.

High school is a higher education institution after the end of nine-year compulsory education in China, which is connected with junior high school and university, usually for three years. China's high school education refers to the high school education after junior high school, including ordinary high schools, vocational high schools, secondary specialized schools, technical schools and so on. , all belong to the category of secondary education.