The Provincial Department of Education and the Provincial Price Bureau conducted an extensive survey of schools, students and parents throughout the province. Finally, based on the principle of economic application, the regulation of "no more than 3 sets in primary school and no more than 2 sets in junior high school" was formulated.

As long as it does not exceed the regulations, it is not illegal.

source and course

School uniforms, at that time, were difficult for some families because of the war. The purpose of the school is to make students from such families not feel inferior because of family difficulties, and to make rich students not show off, so it is stipulated that every student must wear the same clothes when going to school. Later, this concept was accepted by most schools, requiring students to wear the same clothes to school.