The graph shows differences in points between the mean scores of boys and girls in the tests under the OECD’s Programme for International Student Assessment (PISA) in mathematics, science and reading. Negative values (to the left of zero) show differences favouring girls and positive values (to the right) favouring boys. All results are for PISA 2012 except Malta (2009). As the results are based on samples of the population concerned, some of the smaller differences should not be regarded as statistically significant.
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