High school is not a compulsory education stage. According to Article 2 of Chapter 1 of the Compulsory Education Law of People's Republic of China (PRC), the state implements a nine-year compulsory education system; Compulsory education is a compulsory education for all school-age children and adolescents and a public welfare undertaking that the state must guarantee. 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. 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, free, universal and secular.