EDUCATION

• Education Index. New York: Wilson, 1929–. An author-subject database of articles in education journals, books, and yearbooks, including both research-based studies and material on classroom practice. Online versions of this index may include abstracts and full text of selected journals.
• ERIC: Education Resources Information Center. Washington: Institute of Education Sciences, 1966–. Provides descriptive abstracts of over a million journal articles and ERIC documents — research reports, conference papers, curriculum guides, and other materials — that are not otherwise formally published. Some non-journal documents are available in full text. An invaluable tool for educators, this database service is sponsored by the U.S. Department of Education and is available free online at <http://www.eric.ed.gov>.

• Educator's Reference Deskhttp://www.eduref.org A directory of resource guides and lesson plans, searchable by grade level, as well as a collection of questions and answers about a variety of education topics. The site is a project of the Information Institute of Syracuse.
• ENC Onlinehttp://www.enc.org The Web site of the Eisenhower National Clearinghouse for Mathematics and Science Education, funded by the U.S. Department of Education. It offers links to math and science curriculum materials, ideas for teachers, news about science education, and professional development tools.
• GEM: The Gateway to Educational Materialshttp://thegateway.org A directory of online classroom materials. The site offers a sophisticated search engine as well as browsing by keyword, subject, grade level, or type of resource. Search results lead to lesson plans, curriculum units, and other Web materials for educators. The site is sponsored by the U.S. Department of Education.
• National Center for Education Statistics. http://nces.ed.gov Provides a wealth of statistical data on schools and libraries in the United States, including academic achievement; the condition of schools; comparative information on school districts, colleges, and libraries; dropout rates; enrollment trends; school safety; and more. The center is a unit of the U.S. Department of Education.

• Encyclopedia of Early Childhood Education. Ed. Leslie R. Williams and Doris P. Fromberg. New York: Garland, 1992. Offers articles on historical, political, economic, sociocultural, intellectual, and educational influences on early childhood education.
• Encyclopedia of Education. Ed. James W. Guthrie. 2nd ed. 8 vols. New York: Macmillan Reference, 2003. Covers education theory, history of education, education and social forces, and education reform efforts in over 850 articles, emphasizing the U.S. experience but with some international perspectives. Volume 8 includes primary sources and a thematic outline.
• Encyclopedia of Educational Research. Ed. Marvin C. Alkin. 6th ed. 4 vols. New York: Macmillan, 1992. Provides surveys of research in the field, ranging from class size to critical thinking. Surveys are followed by bibliographies for further research.
• Philosophy of Education: An Encyclopedia. Ed. J. J. Chambliss. New York: Garland, 1996. Offers substantial analyses covering various philosophers and their contributions; philosophical topics such as behaviorism, critical thinking, and epistemology; and concepts such as school and truth from a philosophical angle.
• World Education Encyclopedia: A Survey of Educational Systems Worldwide. Ed. Rebecca Marlow-Ferguson. 2nd ed. 3 vols. Detroit: Gale Group, 2002. Provides overviews of education at all levels throughout the world and some discussion of administration and financing, research, and the state of the profession. The appendix includes comparative statistical tables and maps.