The first regular course (a five-year system from 1925) which required graduation from an higher elementary school (elementary school higher course) for entrance, the second regular course which required graduation from a middle school or a women's higher school (institutionalized in 1907, a two-year system from 1931) were set up.
高等小学校（小学校高等科）卒業を入学資格とする本科第一部（1925年から5年制）と、中学校もしくは高等女学校卒業を入学資格とする本科第二部（1907年に制度化、1931年から2年制）が置かれた。