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Hanushek, Eric A.; Woessmann, Ludger – National Bureau of Economic Research, 2010
Critics of international student comparisons argue that results may be influenced by differences in the extent to which countries adequately sample their entire student populations. In this research note, we show that larger exclusion and non-response rates are related to better country average scores on international tests, as are larger…
Descriptors: Foreign Students, Economic Progress, Economic Research, Age