An administrative portfolio is a collection of thoughtfully selected exhibits or artifacts and reflections indicative of an individual's experiences and ability to lead and of the individual's progress toward and/or attainment of established goals. Development of a portfolio system for administrative evaluation should include: (1) considering the principles that address issues such as the purpose, rationale, and implementation of the system; (2) establishing the criteria using national and state-developed proficiencies within the cultural and socioeconomic context of the school district; and (3) establishing specific criteria for scoring. The advantages of the portfolio include: revealing more about the individual being evaluated than a specific score on an evaluative checklist; being personalized and addressing district-specific or campus-specific proficiencies; encouraging self-reflection and renewal; enhancing future planning; and enhancing professional self-image. Disadvantages are that it is time-consuming, for the administrator and for the evaluators, and that concerns over objectivity in judging arise. Three tables provide: ten principles for implementation; sample of proficiencies and suggested artifacts; and a sample rubric for scoring. (Contains 14 references.) (JLS)