A model designed to assist planners of professional development programs develop training programs for administrative mentors is described in this paper. A brief overview of basic concepts and definitions of mentoring is followed by a discussion of factors necessary to the development of mentoring, which are: trust, adequate resources, open communication, and sensitivity. The training model is based on five domains to prepare practicing school administrators to serve as effective mentors for their colleagues, which include: (1) orientation to mentoring; (2) instructional leadership skills; (3) human relations skills; (4) mentor process skills; and (5) contextual realities and implementation issues. (12 references) (LMI)