Student achievement has been identified as important contributor to economic growth. This paper investigates the relationship between redistributive government activities and investment in human capital measured by student performance in international comparative tests in Mathematics and Science during the period 1980 to 2003. In fixed effects panel models, government consumption, government social expenditures, and the progressivity of the income tax system have negative effects on student achievement. The results are robust to a variety of model specifications, including models that condition on educational expenditures. Our best estimate indicates that increased government size by 10 percent reduces student achievement by 0.1 standard deviations.