In a widely cited study, Chetty, Friedman, and Rockoff (2014a; hereafter CFR) evaluate the degree of bias in teacher … there is little to no bias in their estimates. Using the same model with data from North Carolina, Rothstein (2014) argued …

causal impacts on student achievement. We test for bias in VA using previously unobserved parent characteristics and a quasi … that VA models which control for a studentʼs prior test scores exhibit little bias in forecasting teachersʼ impacts on …

handle the potential for non-response bias and identify non-response using an affinity measure -- the potential respondent …-response. In the model describing earnings, estimated using the identified (for non-response bias) selectivity adjustments …