The present study is an analysis of the process and affects of interior design accreditation by FIDER(Foundation of Interior Design Education Research) in the United States. Due to the consequences of becoming a member of WTO(World Trade Organization), currently Architectural programs in Korea are seeking ways to set up this accreditational system. The history of interior design education has always been closely interconnected with architectural education, moreover the educational system in Korea has long been affected by that of the United States. Therefore, the author believes that it is crucial for interior design educators to understand the meanings and affects of accreditation system in order to be prepared for this globalization. This paper analyzes the accreditation system between Architectural and Interior Design programs in the United States with that of Korea. It also presents an In-depth study of FIDER accreditation process in the interior design program at Kansas State University, where the author has participated as a preparation member. Thus hope to serve as a guideline for self evaluating interior design programs in Korea.