The Office of Educational Research and Improvement (OERI) in the U.S. Department of Education has a mandate for expanding knowledge of teaching and learning and for improving education in this country. This book focuses on how OERI can better fulfill that mission in light of what is known about why prior education reforms have often failed, what is needed to enhance the effectiveness of such efforts, and what education research and development can contribute to better schools. The history, mission, governance, organization, functions, operations, and budgets of OERI are analyzed. Recommendations are made for restructuring OERI, expanding funding, involving scholars from many fields, and engaging teachers and school principals in improvement efforts.