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Laura Zieger & John Jerrim PISA measures 15-year-olds achievement scores in mathematics, reading and science and has evolved into a powerful tool in politics, as the scores can be compared across countries and over time. Apart from the scores themselves,...

Rolf V. Olsen and Sigrid Blömeke Large-scale international assessments studies (ILSA) are regarded as important sources for monitoring educational quality in many countries. The results from the studies are frequently cited in policy documents and they are regularly used as...

Phil Parker Imagine you are a policymaker tasked with overhauling your country’s education system. You are faced with a bewildering list of competing claims, all advanced with absolute certainty by proponents. Should you listen to the economists who want to expand...