The purpose of this research is to clarify the process leading to the widespread use of the school uniforms and their role.The study is done in relations to the social situation after World War II.The results show that school uniforms were made mandatory at public junior high schools in the 1960s for economic reasons.The policy was effective in keeping order in schools.Uniforms were regarded as a convenience by both teachers and parents. In the 70's, uniforms were useful in controlling school life. Teachers forced students to wear uniforms.Some students refused to wear them. School uniforms were worn because teachers and parents regarded them as necessary, and the role of school uniforms changed.
