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Schmidt, William H.; Burroughs, Nathan A. – Research in Comparative and International Education, 2013
In this article, the authors review International Large-Scale Assessment (ILSA)-based research over the last several decades, with specific attention on cross-national analysis of mean differences between and variation within countries in mathematics education. They discuss the role of sampling design and "opportunity to learn" (OTL)…
Descriptors: International Programs, Measurement, Educational Research, Cross Cultural Studies
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Valverde, Gilbert A.; Schmidt, William H. – Issues in Science and Technology, 1998
The Third International Mathematics and Science Study (TIMSS) compared mathematics and science scores across 41 countries. American students performed well in science and mathematics in the fourth grade but fell behind their international peers by the eighth grade. Concludes that differences are due to unfocused curriculum, a static conception of…
Descriptors: Achievement Rating, Comparative Analysis, Cross Cultural Studies, Curriculum Evaluation