To develop a rationale for requiring a free-standing philosophy of education course in preservice teacher programs, the researchers reviewed prior literature to construct a framework to establish such a requirement. A review of required course content in non-Catholic (private and public) colleges and universities with preservice teacher programs in five Midwestern states in the United States revealed that most do not require such a course, hence the need for programs to reconsider how licensure candidates develop their teaching philosophies and review program articulation and course content. This study proposes a fourfold theoretical rationale for requiring philosophy of education of preservice teachers.