Firing Bad Teachers Has Surprisingly Meager Effects
Firing Bad Teachers Has Surprisingly Meager Effects
By Kevin Drum
Dylan Matthews: Now, the three components you measure predict future performance on achievement tests. But a lot of people dismiss that, even though there’s growing evidence that achievement test scores are correlated with all kinds of important real-life outcomes. Why do these scores matter?
Thomas Kane: So I’m really heartened — even asking that question means you’re aware of that Chetty/Friedman/Rockoff study….What they found was that the teachers who appeared to have high value-added while the students were in their classrooms, their value-added was predictive of students’ income later. I’m