Over the past two decades, educational evaluation has become well established as a distinctive field of research and practice. The Encyclopedia of Educational Evaluation includes updated and revised material from the award-winning publication The International Encyclopedia of Education. It is a definitive reference providing a current and comprehensive treatment of evaluation theories and practices in education. The emphasis throughout is on practicality. The volume contains over 150 articles organized thematically into eight sections providing an easily accessible, practical yet scholarly source of information about a broad array of significant topics in educational evaluation. Broad philosophical issues of evaluation are addressed in the context of their potential relevance to the actual conduct of evaluation studies. Major topics include the approaches and methods used in educational research focusing on educational needs assessment, measurement, evaluation, design, decision making and educational policy. This Encyclopedia is international in scope, both from the point of view of the authors as well as the range of the educational programs and evaluation theories chosen.