Figure 7.

Enrollment, number of teachers, pupil/teacher ratio, and expenditures in public elementary and secondary schools: 1960-61 through 2012-13

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; and Common Core of Data (CCD), "State Nonfiscal Survey of Public Elementary/Secondary Education," 1981-82 through 2012-13, and "National Public Education Financial Survey," 1989-90 through 2011-12.