"Closed school management" means that through strict management, students can't leave school all day, and life, study and activities are carried out on campus, and students are only allowed to leave school during a short period of recess (such as Saturday). This management mode is quite common in full-time boarding schools in primary and secondary schools (especially in rural areas).

This model is also called "militarized management".

Fully enclosed requires that all basic necessities of life are within the scope of formulation; Semi-closed will be opened regularly or irregularly. Closed schools are a measure to restrain themselves when most students are studying or when adults have poor self-control ability, with the aim of helping them grow up.