NOTE: Elementary and secondary enrollment data for school year 2010 (2010–11) are projected. Elementary and secondary expenditure data for school years 2009 and 2010 (2009–10 and
2010–11) are estimated. Postsecondary expenditure data for school year 2010 (2010–11) are estimated.
SOURCE: U.S. Department of Education, National Center for Education Statistics, Statistics of State School Systems, 1965–66 through 1969–70; Statistics of Public Elementary and Secondary
School Systems, 1965 through 1980; Revenues and Expenditures for Public Elementary and Secondary Education, 1970–71 through 1986–87; Common Core of Data (CCD), "State
Nonfiscal Survey of Public Elementary and Secondary Education," 1981–82 through 2009–10, and "National Public Education Financial Survey," 1987–88 through 2008–09; Private School
Universe Survey (PSS), 1989–90 through 2009–10; Projections of Education Statistics to 2020; Higher Education General Information Survey (HEGIS), "Fall Enrollment in Institutions of
Higher Education" and "Financial Statistics of Institutions of Higher Education" surveys, 1965–66 through 1985–86; Integrated Postsecondary Education Data System (IPEDS), "Fall Enrollment
Survey" (IPEDS-EF:86–99) and "Finance Survey" (IPEDS-F:FY87–99); and IPEDS Spring 2001 through Spring 2011, Enrollment and Finance components. U.S. Department of Commerce,
Bureau of Economic Analysis, National Income and Product Accounts Tables, retrieved November 28, 2011, from http://www.bea.gov/iTable/index_nipa.cfm.