The relative importance of a number of predictors of binge drinking and of high- versus low-frequency binge drinking among undergraduate students was studied. Findings demonstrated that race, class, fraternity or sorority membership, use of other drugs in the past 30 days, positive alcohol expectancies, perception of minimal risk, perception that friends do not disapprove of binge drinking, and perception of high normative drinking were factors in predicting episodes of binge drinking. Being male, having fraternity or sorority membership, perceiving that friends do not disapprove, and using other drugs distinguished high-frequency from low-frequency binge drinkers.