Peer-assisted learning and group facilitation have been proven to foster active participation in small-group learning, and these effective teaching modalities have been shown to enhance learning outcomes. This study introduced a student peer facilitator role in an anatomy small-group curriculum for pre-clerkship medical students and explored its impact on academic performance and retention. Students were required to rotate through this facilitator role and lead their small group during their designated sessions. Data collection methods included pre-course and post-course surveys, individual quiz grades, and retention quizzes sent 1 month after each quiz. Overall, the data revealed a significant increase in the overall combined quiz averages across the curriculum for facilitators compared to participants despite having no notable increase in preparation time (p = 0.004). While facilitators scored significantly higher on the course quizzes, the slight increase in their average retention quiz scores was not significant. This study was unable to identify any significant benefits to retention for either facilitators or participants. In all, this study suggests that a peer facilitation paradigm can be an effective educational modality for medical students, and future studies should explore ways to improve knowledge retention through this role.