Common Core of Data
The Common Core of Data (CCD) is the Department of Education's primary database on public elementary and secondary education in the U.S. CCD is a comprehensive, annual, national statistical database of all public elementary and secondary schools and school districts, which contains data that are designed to be comparable across states. The objectives of CCD are (1) to provide an official listing of public elementary and secondary schools and school districts in the nation, which can be used to select samples for other National Center for Education Statistics (NCES) surveys, and (2) to provide basic information and descriptive statistics on public elementary and secondary schools and schooling in general.
National Center for Education Statistics Common Core of Data and related web pages. Accessed August 26, 2010.