With the current focus on accountability for results, many schools are finding ways to continuously improve their practices and better meet the needs of all children. School districts, too, are focused on the goal of continuous improvement. Nine districts, remarkable for the success they have demonstrated in helping the majority of their schools, were studied for this report. Data were collected from site visits and interviews with virtually all role groups, including parents, school board members, teachers, and administrators. Core components of districtwide action for continuous improvement include a systemic approach, high-quality professional development, a vision that begins with a clear focus on student learning, communication that is highly valued and carefully planned, roles and structures that are defined for effective functioning, and data-driven decision-making. The report concludes with a list of possible actions district leaders could take to move their organizations more fully into continuous improvement. (Contains 17 references.) (RT)