There are three years in high school. Senior high school is a higher education institution after the end of nine-year compulsory education in China. It accepts qualified junior high school graduates, and the general academic system is three years, that is, senior one, senior two and senior three. 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, secondary technical schools and so on. It belongs to the category of high school education. Senior high school education in China is non-compulsory, and students must pay necessary tuition and other fees.

It takes 12 years from primary school to high school graduation. Primary schools are generally school-age children aged 6 to 12. At present, the length of primary education is 6 years and junior high school is 3 years. High school is a higher education institution after the end of nine-year compulsory education in China, connecting junior high school and university, generally for three years.

Primary education is generally a six-year system, which is divided into three stages: the first and second grades are called lower grades, the third and fourth grades are called middle grades, and the fifth and sixth grades are called higher grades.

Junior high school has three years, that is, seventh grade, eighth grade and ninth grade, and there is no money/science. In general, you will learn new knowledge in the first two and a half years. The next semester of grade nine is mainly about preparing for the senior high school entrance examination, and then you can enter ordinary high schools (ordinary high schools), vocational high schools (vocational high schools) or secondary specialized schools (technical secondary schools).