Some freshmen will arrange to start school a few days in advance to adapt their children to school life. In addition, according to the school notice, public schools and private schools are different.

Knowledge expansion: focusing on schools for children of floating population, pre-school child care centers, places for students' social practice activities approved and managed by the administrative department of education, private non-academic education institutions, water, electricity, gas, boilers, elevators and other facilities and equipment, as well as public security prevention, building construction, fire protection, food hygiene, chemical laboratories, dangerous chemicals, etc.