As organization development practitioners, we find ourselves bombarded with many issues and trends, most recently, coaching and leadership. As consultants and professors, we found ourselves trying to put some structure around coaching, leadership, and the basic tenets of organization development. The purpose of this article is to give an overview of the underlying principles and model we developed. In future articles that you will find linked to the OD/Leadership Website, we will discuss each level of the model and offer ideas that you can immediately practice. It's no secret that leadership is one of the most frequently discussed issues today. At all levels of an organization, leaders and managers understand that great leadership is key to individual and corporate success. And, ASTD members and professionals working in the learning and performance field are instrumental in helping leaders and managers develop the necessary skills and competencies to be successful.