This study examined the ability of prior academic performance, proxy efficacy, and academic self-efficacy to predict college academic performance. Participants (N = 202) completed a modified version of the Teacher Collective Efficacy scale (Goddard, 2001), the Academic Self-Efficacy scale (Elias & Loomis, 2000), and a demographic questionnaire. Prior performance was predictive of both academic self-efficacy beliefs and college performance. Hierarchical regression analysis indicates that academic self-efficacy beliefs explain a significant amount of unique variance beyond past performance in predicting college performance. Proxy efficacy did serve as a predictor of student academic self-efficacy, but did not serve as a predictor of college performance. Implications for instructors, as well as for future research, are discussed.