This encyclopaedia is a dynamic reference and study place for students, teachers, researchers and professionals in the field of education, philosophy and social sciences, offering both short and long entries on topics of theoretical and practical interest in educational theory and philosophy by authoritative world scholars representing the full ambit of education as a rapidly expanding global field of knowledge and expertise. This is an encyclopaedia that is truly global and while focused mainly on the Western tradition is also respectful and representative of other knowledge traditions. It professes to understand the globalization of knowledge. It is unique in the sense that it is based on theoretical orientations and approaches to the main concepts and theories in education, drawing on the range of disciplines in the social sciences. The encyclopaedia privileges the "theory of practice", recognizing that education as a discipline and activity is mainly a set of professional practicesthat inherently involves questions of power and expertise for the transmission, socialization and critical debate of competing norms and values.