The present study is one of the first to synergistically examine how out-of-school interests, achievement goals, and peer groups predict academic achievement within a predominantly African American high school. For males, neither after-school interest-based activities nor achievement goals predicted math performance. For females, mastery goal orientation positively predicted math scores, whereas higher interest in dancing negatively predicted math outcomes. Peer group level analyses suggested that the number of females present in a peer group and a greater interest in watching science TV were positive predictors of peer groups' math achievement.