The skills, understandings, and attitudes necessary for an effective instructional supervisor were identified in the literature (using, for the most part, those materials written since 1975). Twenty-six elements were identified and clustered into six areas for a self-evaluation instrument that can give supervisors a means to describe and analyze their work in instructional supervision. The supervisor or principal selects, on a 5-point scale, responses to describe personal behavior on each of the 26 elements of instructional supervision. On the analysis sheet the instructional supervisor identifies weak areas and writes a plan with specific steps to take in order to improve those areas. The outline of elements of the supervisory process names each of the items on the self-evaluation form and lists suggested resources for that item. A supervisor evaluation form and suggestions for its use are included to obtain feedback from the supervisees. The self-evaluation instrument can be used as the basis for a program for training supervisors as well as a means of support and self-assessment during their first year in a supervisory position. It can also be used in the planning of staff development programs for principals and supervisors. A bibliography listing 105 resources is appended. (MLF)