As one of the most important dependent variables in education and work research, performance has been operationalised either as the proficiency with which core tasks are performed (task performance), or as extra-role behaviours that support core activities (organisational citizenship behaviours). Relative to academic performance (core academic achievement), there has been little research on the extent to which students practise organisational citizenship behaviour (OCB) in their academic work. The aim of the present study was to explore some correlates of both OCB and academic performance. Data used in the study were obtained from 185 students enrolled in a business course at the National University of Lesotho. Survey questionnaires inquiring about students' commitment, self-esteem, and OCB were administered to 204 third-year students. These were correlated with formal academic performance before and after the survey. Students' commitment was significantly related to both OCB and academic performance. Self-esteem was significantly correlated with OCB, but not academic performance. Two dimensions of OCB (altruism and civic virtue) were moderately but significantly related to academic performance. Results suggest that improving self-esteem might affect OCB, and improving commitment and certain elements of OCB might improve academic achievement.