Digest of Education Statistics. (2013, April). Estimated average annual salary of teachers in public elementary and secondary schools by state: Selected years, 1969-70 through 2012-13 [Table]. Retrieved from https://nces.ed.gov/programs/digest/d13/tables/dt13_211.60.asp.
Constant dollars based on the Consumer Price Index (CPI), prepared by the Bureau of Labor Statistics, U.S. Department of Labor, adjusted to a school-year basis. The CPI does not account for differences in inflation rates from state to state.
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