This book provides a rigorous grounding in contemporary educational leadership theories and their application to policy and practice globally across educational contexts. The book showcases contributions from authors with a deeply embedded understanding of educational leadership and in schools’ context. It will focus on major aspects of school leadership, including contemporary theories and models in the 21st century, the role of the principal, the work of senior and middle leaders, leadership, and student outcomes. Each chapter will engage with theory, policy, and practice, and draw on authors’ own research and with other empirical and conceptual sources.