|NOTE: Elementary and secondary enrollment data for 2016 (school year 2016–17) are projected. Elementary and secondary expenditure data for 2015 and 2016 (school years 2015–16 and 2016–17) are estimated. Postsecondary expenditure data for 2016 (school year 2016–17) 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 2015–16, and "National Public Education Financial Survey," 1987–88 through 2014–15; Private School Universe Survey (PSS), 1989–90 through 2015–16; National Elementary and Secondary Enrollment Projection Model, 1972 through 2027; Higher Education General Information Survey (HEGIS), "Fall Enrollment in Institutions of Higher Education" and "Financial Statistics of Institutions of Higher Education" surveys, 196–66 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 2017, Enrollment and Finance components. U.S. Department of Commerce, Bureau of Economic Analysis, National Income and Product Accounts Tables, retrieved March 4, 2018, from https://www.bea.gov/iTable/index_nipa.cfm.