According to the Constitution, school-age children and adolescents must receive national education, which must be 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 in accordance with the provisions of the law. Compulsory education is also called compulsory education and free compulsory education. Compulsory education has the basic characteristics of compulsory, public welfare and popularization. The period of compulsory education stipulated in China's Compulsory Education Law is nine years (six years in primary school and three years in junior high school; Some provinces and cities have five years of primary school and four years of junior high school), which is in line with China's basic national conditions and is appropriate.

Fifty-seventh schools in any of the following circumstances, the education administrative department of the people's government at the county level shall be ordered to make corrections within a time limit;

(a) refusing to accept disabled school-age children and adolescents who have the ability to receive general education;

(two) divided into key classes and non-key classes;

(3) expelling students in violation of the provisions of this law;

(four) the selection of unapproved teaching materials.