In this program evaluation study, we analyzed the impact of interpersonal validation and participation in living-learning communities (LLC) on retention and GPA via regression and propensity score matching. The LLCs were designed to improve outcomes for underrepresented, low-income and first-generation students at a Midwestern regional public university. Employing data from the widely used Mid-Year Student Assessment™, we created a validation score. This student validation score was significantly associated with retention in semester three, and third semester and sixth semester GPA. In the matched pair analyses, we found mixed results with significantly improved retention for participants in just one LLC compared to their matched peers, and significantly improved GPA for a combined group of LLC participants.