Statistical Abstract of the United States: Summary of statistics on social, political, and economic characteristics of the United States that has been published by the Census Bureau since 1878. These volumes include data from the Census Bureau and many other federal agencies and private organizations.
DataFerrett: A data mining tool that accesses data stored in TheDataWeb through the internet. It allows you to create your own data tables or extractions using an interactive tool.
Other Related Sites
National Center for Education Statistics (NCES): located within the U.S. Department of Education and the Institute of Education Sciences, NCES is the primary federal entity for collecting and analyzing data related to education