Student organization development (SOD) is an emerging technology for conducting intentional student development through positive alteration of student organizations. One model (CORE) for conceptualizing SOD is in use at the Student Development Center of the University of Cincinnati. The CORE model to SOD is comprised of three concentric rings, the central ring containing the four CORE conditions (Cohesion, Organization, Resourcefulness, and Energy) which activate an organization to satisfactorily meet its needs. These student organizational needs, which represent mid-range goals and comprise the second ring of the model, are fund raising, maintaining attendance, recruitment, motivating members, assuming leadership, improving communication, and group unity. The outer ring of the model includes ten student development domains, i.e., forming friends; establishing identity; expressing feelings; developing personal, interpersonal, environmental, and task competencies; developing purpose; career preparation; and enjoyment. These ten domains are the long-range outcome goals of student organization development. (WAS)