UNdata, K-12

http://data.un.org
United Nations has been collecting and publishing statistical data for 60 years on a wide range of economic, social, political, cultural, and environmental issues. The goal of UNdata is to gather statistics from 24 separate databases and make them all accessible through one search interface. The data can be customized by country, area, or time period filters. A permanent URL can be created to link to the customized data. Can also download the data in a comma-delimited file.