"Three Publics" refers to civil servants, institutions and retirees from state-owned enterprises. Their children enjoy certain preferential policies when applying for public schools, such as lowering admission scores and increasing enrollment quotas. The preferential policies of Sangong are to commend and support their work contributions and encourage their children to inherit and carry forward family traditions.

The preferential policy of "three publics" has certain influence on the admission of public schools, but it is not an absolute decisive factor. Public schools will comprehensively consider the conditions of candidates, such as grades, specialties, interview performance, etc. Instead of just taking the three public identities as the admission criteria. Therefore, even if it is a three-public identity, if other conditions are not met, it may not be able to be admitted to a public school.

It should be noted that the preferential policies for the three fairs are only a policy inclination, not an absolute right. When recruiting students, public schools need to follow the relevant national and local policies, and at the same time, they need to consider the principle of fairness and justice to ensure that all candidates can compete fairly and get fair admission opportunities.