Considering the interpretation of “Kei-Shin-Su-So” incorporated in a school philosophy and motto possessed by secular schools, this paper discusses roles of religious sentiments in the modern education. Moreover, this paper points out, through the comparative investigation between the ministry’s modern and prewar curriculum guidelines, that religious sentiments have been removed from the Japanese postwar moral education since the end of the World War II. It is argued in this paper that religious sentiments based on Japanese national traits lead to nothing less than respecting our national tradition and culture, which is emphasized in the current Japanese Fundamental Law of Education.