This text goes beyond traditional supervision books and assumes that teachers and principals must work as colleagues to improve teaching and learning in schools. Traditional supervision in which the principal rates the effectiveness of teachers is an outmoded concept. This is the first text of its kind, written for principals and other instructional leaders to help them understand current theories of teaching and learning as well as the practical curriculum applications of these perspectives. This text uses a learning-centered approach that emphasizes making decisions that support student learning. This text addresses the critical aspects of the teaching-learning process-student differences, learning, student motivation, teaching, classroom management, assessing student learning, and assessing and changing school climate and culture. Each chapter is grounded in the latest research and theory in that area and provides specific suggestions for applying that knowledge to practice.