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Total weekly hours of instruction in mathematics, language and science is 55 % higher in Denmark than in Austria ...

„Overall, total weekly hours of instruction in mathematics, language and science is 55 % higher in Denmark (11.5 hours) than in Austria (7.4 hours).“

Univ.-Prof. Dr. Victor Lavy, „Do Differences in Schools' Instruction Time Explain International Achievement Gaps?“ in „The Economic Journal“ 125 (November 2015), S. 397