Many college and SAT preparation programs are designed to improve the postsecondary success of traditionally marginalized students. In addition to academic preparation, students' social and emotional preparation is important for the transition from high school to college. Mentors can serve as role models and supports to aid students in this development. Using student survey data and hierarchical linear modeling, this study examines the influences of student-mentor relationships within an SAT program setting on students' college attitudes. Results indicate that these relationships can positively influence students' college attitudes, particularly for students who have lower baseline SAT scores. Recommendations for future research and practice are provided.