Numerous documented examples are presented of how research has contributed to the development of constructive education policies and practices throughout the country. Part 1 discusses the use of research in California, South Carolina, Florida, and Connecticut. Also described are the efforts of specific organizations that are using research to reform education policies. The Education Testing Service is revising the National Teachers Examination; the Education Commission of the States is working to improve secondary schools; and the Carnegie Council on Adolescent Development is influencing the middle grades. Part 2 describes three broad uses of research to influence education policy: (1) the effective schools research; (2) studies of early childhood education; and (3) research on higher order thinking. Also cited are the research-backed education reforms of raising student standards, evaluating teacher quality, and restructuring schools. This section closes by documenting the impact of several major federal research programs as well as studies sponsored through the National Conference of State Legislatures. Part 3 discusses lessons that can be learned about the impact of research on education policy development; describes how research can be most helpful; and makes recommendations for the federal educational research and development system. (169 references) (MLF)