Background: Service-learning is a powerful tool to promote attitudinal change; however, most findings center the experience of white, middle-class, continuing-generation students and do not reflect the shifting demographics of higher education. Little is known about the impact of service-learning at Hispanic-Serving Institutions (HSIs) on attitudes toward others, and even less is known based on studies experimentally manipulating the presence of service-learning. Objective: This study investigated how a service-learning project conducted at an HSI impacted changes in attitudes toward those experiencing homelessness. Method: Sixty-three students taking Social Psychology either participated in a course with a service-learning project or one that did not. Attitudes related to those experiencing homelessness and the self were assessed over time. Results: Students that participated in service-learning saw increased positive attitudes toward those experiencing homelessness over time compared to those that did not participate in service-learning. Conclusion: Service-learning seems to have helped foster positive attitudes toward those experiencing homelessness for students at an HSI.