High school is the abbreviation of senior high school. Middle schools are divided into junior middle schools and senior middle schools, both of which belong to the category of secondary education. Senior middle school is a higher education institution after the end of nine-year compulsory education, connecting junior high school and university, generally for three years. Senior high school education includes: ordinary senior high schools, ordinary secondary specialized schools, adult high schools, vocational high schools, intermediate technical schools, vocational secondary specialized schools and secondary normal schools.

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Secondary education is a continuing education based on primary education. All kinds of schools that implement secondary education are secondary schools, and general secondary schools are its main part, shouldering the dual tasks of conveying qualified freshmen for higher schools and cultivating labor reserve forces for national construction. Ordinary secondary specialized schools and secondary normal schools shoulder the task of cultivating secondary specialized talents for various industries of the national economy.