Middle school students refer to students who receive secondary education, generally around the age of 12- 18, and are divided into junior high school students and senior high school students.
Junior high school is the last three years of nine-year compulsory education (the central government promotes nine-year compulsory education in all provinces and adopts a limited provincial system), including the seventh to ninth school years. Originally called Grade One, Grade Two and Grade Three, now called Grade Seven, Grade Eight and Grade Nine. There will be an exam at the end of the third grade, which is the senior high school entrance examination.