How does teacher grade inflation affect students' long-term outcomes and earnings?
Core argument: The authors estimate that assignment to a teacher with one standard deviation higher average grade inflation reduces the present discounted value of students' lifetime earnings by $213,872 per year.
We develop two teacher-level measures of grade inflation: one measuring average grade inflation (the year-specific teacher fixed effect showing the teacher’s average contribution to grades after controlling for the student's contemporaneous performance in the focal subject as measured by the corresponding subject test score as well as prior test scores, prior grades, and other background characteristics), and another measuring a teacher's propensity to give a passing grade [which affects primarily students near the bottom of the distribution]. A [separate] cognitive value-added measure [included in the regressions] is a teacher fixed effect capturing how much a teacher raises students' standardized test scores relative to what would be predicted from the students' prior test scores and background characteristics. Grade-inflating teachers have moderately lower cognitive value-added and slightly higher noncognitive value-added. The two [grade-inflation] measures differentially impact students' long-term outcomes. Being assigned a higher average grade inflating teacher reduces a student's future test scores, the likelihood of graduating from high school, college enrollment, and ultimately earnings. A teacher with one standard deviation higher average grade inflation reduces the present discounted value [PDV] of lifetime earnings of their students by $213,872 per year. In contrast, passing grade inflation reduces the likelihood of being held back and increases high school graduation, with limited long-run effects. [Figure 7 in the gallery].



