This book presents the concept of ethical knowledge as it is revealed, as it is challenged, and as it may be used in schools. The book combines empirical expressions of teachers' beliefs and practices with a discussion of the connections between the moral dimensions of schooling and applied professional ethics in teaching. Ethical knowledge relies on the teacher's awareness, understanding, and acceptance of the demands of moral agency. Ethical knowledge is compromised by moral dilemmas and complexities that routinely challenge teachers. Moral tensions may be eased by three avenues of renewal based on heightened attention to ethical knowledge: a renewed sense of teacher professionalism, renewed school cultures, and renewed teacher education and professional learning. The "Ethical Teacher" is for teachers and teacher educators and for those who conduct research about their worlds.