Changes in specification and sample restrictions
|Sample restrictions and regression specification||Original sample and model used in previous work||Sample and model used in this paper|
|Dependent variable log weekly wage||Yes||Yes|
|Self-employed workers dropped||Yes||Yes|
|Weekly hours ≥ 35||Yes||Yes|
|Imputed CPS wage data dropped||Yes||Yes|
|Age range 18–64||Yes||Yes|
|Education sample restriction||None||B.A. or higher|
|Education category controlsb||6||4|
|Race/ethnic controls: w,b,h,oc||Yes||Yes|
|Age quartic controls||Yes||Yes|
|Gender control (pooled regressions)||Yes||Yes|
|Private-sector teacher indicator||Yes||Yes|
|Public-sector teacher indicator||Yes||Yes|
|Include CPS-ORG weight in regressions||No||Yes|
a We adjust top codes using Pareto distribution.
b Six groups: less than high school, high school diploma, some college or associate degree, bachelor’s degree, master’s degree, professional degree/Ph.D. (combined). Four groups: bachelor’s degree, master’s degree, professional degree, Ph.D.
c White, black, Hispanic, other. Race/ethnicity categories are mutually exclusive (i.e., white non-Hispanic, black non-Hispanic, other non-Hispanic, and Hispanic any race).