This guide provides an overview of the National Education Research and Development Centers sponsored by the Office of Research of the U.S. Department of Education. Information provided for each of 23 centers includes the nature of the center's work, its location, and the names of its principal researchers. Center listings are divided into two groups. For centers that have been in operation for at least 3 years, accomplishments, research findings, and publications are reported; for newer centers, major research areas are described. The guide is intended for three primary audiences: (1) practitioners (to locate information about recent research developments and researchers in particular fields); (2) researchers (to help coordinate collective efforts on particular topics); and (3) funders of research (to keep informed about progress of work in the areas covered by the centers). (GL)