This paper describes the uses of portfolios for the preparation and continuing professional development of educators, with a focus on the use of portfolios as an important part of administrator development. It looks at the use of portfolios as a way to promote more effective and intensive continued learning among educational leaders. A brief overview of portfolios as they have been applied to a wide variety of school settings is provided. A framework is presented that explains three broad areas of application of portfolios for school leaders, along with a review of documents to be included in portfolios. Some of the specialized applications of portfolios to the world of educational administrators--career planning, administrator evaluation, and professional development--are highlighted. (LMI)