Under No Child Left Behind legislation of 2002, school principals shoulder the burden of school success determined by test scores of students. Challenges principals face demand school leaders possess greater knowledge and skills than administrators of the past. The need for well-trained, skilled school leaders makes it important to study the subject of school leadership training. This study examined a school leadership preparation partnership between the University of North Texas and Dallas Independent School District. Primary supporting references include work by Bottoms and O'Neill (2001) calling for the 16-member states of the Southern Regional Education Board to train a new breed of principal to meet the current demands for student achievement in public schools. This research adds to the body of knowledge of school leadership development programs, particularly those that involve cohort-based study groups and shared service partnerships between school districts and universities. Major questions investigated: 1) How did participation in the program change the involvement of administrative interns in campus-based decision-making? 2) How has participation in the program changed the ways participants perceive themselves? 3) What actions have members of the cohort group taken in their teacher-leader/administrative positions to affect student achievement? 4) What are the strengths and weaknesses of the UNT/DISD/SREB Leadership Development Program partnership? Information was gathered from 16 of the 26 program participants through questionnaires, interviews, and document study.