The present study examined whether there are ethnic differences in perceptions of campus climate, social support, and academic efficacy among community college students, and whether student perceptions were associated with academic success. A total of 475 community college students completed a questionnaire that measured students' perceptions of cultural congruity, college environment, mentoring, peer social life and academic self efficacy. Ethnic differences were observed, as African American and Caucasian students reported higher levels of cultural congruity than Asian students and higher academic self efficacy than Asian and Latino students. There were also ethnic differences in the relationship between the students' perceptions and GPA. Cultural congruity and efficacy correlated with GPA among Latino students, academic efficacy correlated with GPA among Asian students, peer social support and college environment correlated with GPA among Caucasians, however, none of the perceptions scales correlated with GPA among African American students. The lack of relationship between academic efficacy and GPA among African American and Caucasians students is discussed.According to educational researchers, student retention is one of the most critical issues facing post-secondary institutions today (Hsieh et al. 2007;Thompson et al.