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PISA test scores are not measuring the ‚quality‘ of a country’s schooling system ...

„PISA test scores are not measuring the ‚quality‘ of a country’s schooling system per se. Rather, PISA test scores are influenced by several factors, many of which are beyond schools’ control (e.g. the willingness of parents to provide their children with extra tuition).“

Dr. John Jerrim, „Why do East Asian children perform so well in PISA?“ (2014), S. 17