In recognition of the critically important role that principals play in ensuring both student and teacher success in school, the Center began incorporating data on education leadership into these reports, and in the spring of 2010, convened the first policy forum on leadership entitled "Strengthening Teaching Practice: The Role and Responsibilities of School Site Leaders". Forum participants included teachers, principals, superintendents, policymakers, and researchers. Their charge was to build consensus on what policymakers must know about school site leadership in order to ensure an adequate pool of effective leaders capable of guiding and supporting high quality teaching practice. This policy brief is an important component of the Center's continuing efforts to strengthen teaching quality through effective school site leadership. The document is based on the deliberations of the Forum participants as well as a review of the literature on school leadership and the secondary data available through the state's data system. (Contains 1 exhibit and 2 figures.)