Leadership development experiences have long been touted as necessary and positive for promoting the practice of effective leadership. Yet, little has been presented about the effectiveness of leadership development programs sponsored, designed, and implemented by membership-based organizations, like fraternities and sororities. This study examines the efficacy of a national fraternity sponsored leadership development program for chapter presidents in facilitating a meaningful developmental experience and encouraging long-term learning gains. Data collected at three intervals throughout the year in which program attendees were in office were analyzed using ANOVA and t-tests to identify the specific areas in which students reported learning gains and then measured examining the extent to which learning was retained.