Sable, J., and Hill, J. (2006). Overview of Public Elementary and Secondary Students, Staff, Schools, School Districts, Revenues, and Expenditures: School Year 2004–05 and Fiscal Year 2004 (NCES 2007-309). National Center for Education Statistics, Institute of Education Sciences, U.S. Department of Education. Washington, DC. Retrieved June 27, 2007.
Seastrom, M., Hoffman, L., Chapman, C. and Stillwell, R. (2007). The Averaged Freshman Graduation Rate for Public High Schools From the Common Core of Data: School Years 2002–03 and 2003–04 (NCES 2006-606rev). National Center for Education Statistics, Institute of Education Sciences, U.S. Department of Education, Washington, DC. Retrieved November 20, 2007.
Data files for school, agency, and state universe surveys may be found on the CCD Data Files page of the CCD website.