1. universality: compulsory education in primary schools means that the state, society, schools and families must ensure that all school-age children and adolescents can complete nine-year compulsory education in accordance with the provisions of the compulsory education law, so that no school-age children and adolescents will not enter school or drop out of school, and everyone can meet the basic education requirements.

2. Mandatory: In order to ensure the implementation of compulsory education, we must rely on the mandatory force of national laws. The implementation of compulsory education makes primary education compulsory. This not only guarantees children's right to education, but more importantly, the development of primary education in China has been "escorted" by law.

3. Foundation: Primary education is the foundation of all levels of education. Personally, it is the basic stage for a person to form a certain ideological morality and master scientific and cultural knowledge, and it plays a decisive role in the ideological morality and scientific and cultural quality of every citizen.