Barro-Lee Educational Attainment Dataset - Educational attainment data for 146 countries in 5-year intervals from 1950 to 2010. It also provides information about the distribution of educational attainment of the adult population over age 15 and over age 25 by sex at seven levels of schooling.
Eldis - Covers international development issues. Content by topic and country name.
Global Education Database (GED) - Interactive program for accessing education data compiled by USAID from UNESCO. Over 115 indicators, data for 200 countries.
Human Rights Watch - Content by country and topics, including Children's Rights.