This paper summarizes a Master's project designed for principals who are interested in pursuing instructional leadership in their schools. The first part provides the principal with an overall understanding of, and rationale for, the role of the principal as instructional leader. The second part, written in the format of a handbook, describes the knowledge base that principals need to acquire, the tasks that must be accomplished, and the interpersonal and technical skills necessary for carrying out instructional leadership. The handbook was developed to introduce principals to the changes required in becoming effective instructional leaders. Among the tasks described are instructional evaluation and supervision, peer coaching, staff and group development, action research, and curriculum implementation. Four figures are included. Appendices contain an instructional framework, a supervisory beliefs inventory, an instructional-development plan, the five steps of clinical supervision, information on group roles, and descriptions of interpersonal/supervisory approaches. (Contains 67 references.) (LMI)