Responding to calls from the president of the United Sates and the Business Roundtable, business leaders have become increasingly involved in setting the education reform agenda. Using five interest group theories and longitudinal data; the authors examined the formation, agenda setting, and maintenance of an organization of business leaders. Moderate support was found for each of the theories. Analyses further revealed that policy interests and to a lesser degree, functional interests were important to the formation and activity of the interest group. To forge successful partnerships and to implement effective reform, educators, policy makers, and researchers must better understand the motives and actions that impel business involvement in education