Empirical investigations of the role of human capital require accurate measures across countries and over time. This column describes a new dataset on educational attainment for 146 countries at 5-year intervals from 1950 to 2010. The new data, freely available online, use more information and better methodology than existing datasets. Among the many new results is that the rate of return to an additional year of schooling on output is quite high – ranging from 5% to 12%.

India’s trade liberalisation in the 1990s produced large gains, but it imposed significant costs of adjustment on communities with industries that lost tariff protection. A new study shows that those communities’ educational attainment lags behind the rest of India due to the intersection of trade adjustment, poverty, and schooling costs.