This study explored the effects of fraternity and sorority membership on first-year college students' development of socially responsible leadership at 24 colleges and universities. The institutions varied in terms of public versus private, size, region, and student residential patterns. Results showed that fraternity members demonstrated significantly higher scores on two components of leadership than unaffiliated men. Sorority members also demonstrated significantly higher scores on two dimensions of leadership compared to unaffiliated women. Implications for practice are discussed.