The reason is that in some areas, primary school lasts for five years and junior high school lasts for three years, so it adds up to eight years of compulsory education; Under normal circumstances, it is six years in primary school and nine years in junior high school, but there are still few areas with five years in primary school.

Compulsory education is a compulsory education for all school-age children and adolescents and a public welfare undertaking that the state must guarantee. The quality of compulsory education is related to the healthy growth of hundreds of millions of children, the development of the country and the future of the nation.

In fact, this is a compulsory education system for school-age children and adolescents according to law. The annual limit is nine years, which is also called nine-year compulsory education. Compulsory education is also called compulsory education and free compulsory education. Compulsory education has the basic characteristics of compulsory, free, universal and secular.