The Early Childhood Directors Leadership Institute (ECDLI) project addressed a need for effective professional development with a series of Institutes using the Program Administration Scale (PAS), the Program Management Inventory (PMI), and the Plan-Do-Study-Act model, over a 3-year period. Each of the 100 participating program directors in the ECDLI Project from across the state received individualized coaching and support from an early childhood expert and participated in coaching teams in smaller geographically organized groups throughout the project. We describe key features of the development, implementation, and evaluation of this statewide professional development initiative for early childhood leaders.