2. High school is short for high school. Middle schools in China are divided into junior high schools and senior high schools, among which senior high schools belong to the category of senior secondary education. Senior middle school is a higher education institution after the end of nine-year compulsory education in China. It is a three-year program, connecting junior high school and university. Senior high school education in China refers to senior secondary education after junior high school, including: ordinary high schools, adult high schools, vocational high schools, secondary specialized schools, secondary technical schools and so on. , all belong to the category of senior secondary education.