International benchmarking is difficult, but perhaps one of the areas where this is most complicated is education. As a widely recognized economic driver and catalyst for national progress, it is intimately tied with economic and social policy - both of which vary widely by country. What matters in education differs depending on a country's culture, values, and current circumstances.
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Read more about international education rankings:
U.S. Department of Education: Science, Technology, Engineering and Math: Education for Global Leadership
OECD: PISA Background and Basics