This booklet is intended to help teachers and principals examine their roles, responsibilities, and relationships to create a quality instructional program at the school site. It consists of guidelines intended to foster a positive school environment; to encourage and facilitate discussion, collegiality, and mutual professional respect; and to broaden the common interests of teachers and principals. By offering school professionals a means of measuring the distance between what their school is now and what it is capable of becoming, the guidelines provide the opportunity to develop a blueprint for self-improvement and a design for greater organizational effectiveness. Descriptions of "model practices" or "the evidence of success" common in effective schools are categorized into the folowing sections: "Successful Secondary Schools: The Cooperative Model"; "School Goals and Purposes"; "School Organization and Climate"; "Classroom Instruction"; "Supervision/Evaluation/Personnel"; "Student Learning and Behavior"; and "Family and Community Relationships." Appendices include names of NEA/NASSP task force members and contacts for the "Ventures" project. (IW)