This report presents school leadership development policies and practices across all 50 states and select U.S. territories. Researchers Bobbi Newman, Jonathan Supovitz, and Greg Collins from the Consortium for Policy Research in Education (CPRE), in collaboration with National Association of State Boards of Education (NASBE) staff, interviewed state board members and staff members from state education agencies to learn about their states' school leadership development policies and practices and identify the organizational and individual supports that states have established. This new analysis provides a wealth of information for state leaders interested in learning about promising policies and programs across the country that support the school leadership pipeline. [The following is a companion piece to this report, "Successful Leaders for Successful Schools: Building and Maintaining a Quality Workforce. Report of the NASBE Leadership Development Study Group," see ED582121.]