This paper aims to show the significance of the educational reforms of women's higher education during the U.S. occupation of post-World War II Japan. To help fill the gap of research on women's higher education in Japan, focus is on an historical analysis of women's higher education reform policies. Since educational reforms are not one-dimensional, the paper analyzes the educational reform policies of women's higher education through the use of an assortment of historical materials. It examines the installment of the single-track system and its influence on women's higher education through primary and secondary sources. It calls for further research to shed more light on the reality of the postwar educational reforms in women's higher education while comparing them to the prewar system that was immersed in a rigid cultural setting. (Contains 26 references and 5 notes.) (BT)