Outcome research examining the effectiveness of teaching methods in counselor education is sparse. The researchers conducted a qualitative investigation utilizing an instrumental case study to examine the influence of a constructivist-developmental format on a play therapy counseling course in a large CACREP accredited university in the Southeastern United States. Results indicated that the constructivist-developmental lens was effective in promoting the professional development of counselors-in-training. The researchers offer course-specific recommendations as well as areas of future research.