This article contributes to the growing debate around how we understand and develop multi-agency leadership in children and young people's services. Bringing together a range of inter-disciplinary research, it presents a framework for multi-agency leadership development, which, it argues, is well theorised, multi-level and versed in key field skills that educational leaders need in complex environments. The framework comprises six elements: complexity and culture (underlying concepts); multi-professional groups and inter-organisational partnerships (operating levels); and organisational consultancy and professional supervision (field skills). These elements are discussed, the practical implications of incorporating them into professional development provision for educational leaders are examined and some provisional conclusions are reached. (Contains 2 tables.)