Book excerpt: The SAGE Handbook of Educational Leadership is a landmark work with contributions from 37 internationally renowned scholars covering an extensive range of issues confronting the field of educational leadership and administration. The Handbook reviews how leadership was redefined by management and organizational theory in its quest to become scientific, then looks forward to promising theories, concepts, and practices that show potential for development and application. This Handbook represents the establishment of a new tradition in educational leadership. It thoroughly covers a broad range of issues pertaining to curriculum leadership, supervision, teacher evaluation, budgeting, planning, school design, and issues facing the principalship and the superintendency in the United States.