This edited collection is the first part of a two-volume set., which focuses on leadership in Catholic education settings in the United Kingdom. It includes an overview of the importance of different types of leadership, including 'servant-leadership', in understanding and framing Catholic school practice, a critical survey of why leadership matters to ensuring the success of Catholic education, and a discussion of what counts as the defining characteristics of leadership in Catholic education and how this relates to the aims or philosophy of Catholic education. The chapters in this book draw from the insights and experiences of serving Catholic school leaders as well as from academics and researchers in Catholic education studies. The final two chapters provide a comparative analysis for the United Kingdom in a global perspective using data from the Organisation for Economic Co-operation and Development (OECD) . Together, the chapters argue that there is an urgent need to find, nurture, and sustain outstanding leaders for Catholic schools and colleges.