This study examines McGraw-Hill Higher Education's LearnSmart online textbook supplement and its effect on student exam performance in an interpersonal communication course. Students (N = 62) in two sections were either enrolled in a control group with no required LearnSmart usage or a treatment group with requisite LearnSmart assignments. Aggregated exam scores were compared using independent sample t tests. Results indicate that the control and treatment groups scored similarly on the exams with no significant differences; however, patterns of findings reflected a trend of higher scores in the treatment condition. Students utilized the tool primarily as a study aid and generally were satisfied with the online resource except for the perceived value. Suggestions for administration of the LearnSmart tool are provided.