The aim of this study is to elucidate what kind of curriculum was designed for post-World War II teacher education. The focus lies on Tohoku University’s Department of Education. I look at the role of the “principle of education” in teacher education program. The department is the nationwide organization that was created by the incorporation of normal school that is the organization of compulsory teacher training into imperial university. Looking the situation in the context of the reform period, the creation of the department represented an ideal leader in “teacher training in universities” because the university could provide high-quality instructor education, and it was based in a research university. The following two points were revealed. (1) “Principle of education” was emphasized by requiring rather junior course than senior course. (2) Hosoya plan had the feature that it imposes many subjects related to teacher teaching on students. In fact, however, the curriculum with many free elective subjects was implemented.