Drawing from research in team creativity enhancement, this study focuses on a "Creativity, Innovation and Design Thinking" course for the International Summer Semester at Sungkyunkwan University, Seoul, South Korea. Data were collected among 15 teams of 89 students that participated in the course. Performance of the teams was measured by the grade they received from peers and instructor for all the creative projects. Participants answered a precourse and postcourse questionnaire to compare gains. There was a statistically significant shift in the students' perceptions from pre-test to post-test in agreeing that diversities help teams to be more productive and more creative.