This classic market leading text in instructional leadership and supervision continues to challenge the conventional purposes, practices, structure, and language of successful supervision. The text's emphases on school culture, teachers as adult learners, developmental leadership, democratic education, and collegial supervision have helped to redefine the meaning of supervision and instructional leadership for both scholars and practitioners. Building on the success of previous editions, the sixth edition now addresses hot issues such as school improvements, constructivist teaching, professional development, Chaos Theory, and state mandated standards.