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Suter, Larry E. – Research in Comparative and International Education, 2017
The international comparative studies in 1959 were conducted by International Association for the Evaluation of Educational Achievement (IEA) researchers who recognized that differences in student achievement measures in mathematics across countries could be caused by differences in curricula. The measurements of opportunity to learn (OTL) grew…
Descriptors: International Studies, Cross Cultural Studies, Mathematics Achievement, Educational Opportunities
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McDonnell, Lorraine M. – Educational Evaluation and Policy Analysis, 1995
The evolution of the opportunity-to-learn (OTL) concept from a research concept to a policy instrument is examined. The origins of OTL in studies by the International Association for the Evaluation of Educational Achievement are described, and the role of OTL research in educational indicators is explored. (SLD)
Descriptors: Academic Achievement, Concept Formation, Cross Cultural Studies, Educational Indicators