Figure 7.

Enrollment, number of teachers, pupil/teacher ratio, and current expenditures in public elementary and secondary schools: Selected years, 1960–61 through 2015–16

NOTE: Expenditure data for school year 2015 (2015–16) are projected. SOURCE: U.S. Department of Education, National Center for Education Statistics, Statistics of State School Systems, 1959–60 through 1969–70; Statistics of Public Elementary and Secondary Day Schools, 1959–60 through 1980–81; Revenues and Expenditures for Public Elementary and Secondary Education, 1970–71 through 1980–81; Common Core of Data (CCD), "State Nonfiscal Survey of Public Elementary/Secondary Education," 1981–82 through 2015–16; "National Public Education Financial Survey," 1989–90 through 2014–15; and Public Elementary and Secondary Education Current Expenditure Projection Model, 1973–74 through 2027–28.