Nine years. Karamay is a prefecture-level city under the jurisdiction of Xinjiang Uygur Autonomous Region. The legal period of compulsory education in China is nine years, including six years in primary school and three years in junior high school. So compulsory education in Karamay is nine years. Compulsory education is a national education that school-age children and adolescents must accept according to law and is guaranteed by the state, society and family. Its essence is a system of compulsory education for school-age children and adolescents for a certain period of time according to law.