teachers' classrooms, prior research has largely focused on the validity of value-added measures. We conduct an experiment … two previous experiments, we provide further evidence that value-added measures are unbiased predictors of teacher …

Reflection Test. In laboratory experiments with 1,236 college students in Nairobi, we implement three incentive levels: no … reliance on intuitions. In none of the tasks are very high stakes sufficient to de-bias participants, or come even close to …

students' demographic characteristics and previous scores. This paper tests for VAM bias using a procedure that asks whether … model describing the joint distribution of school value-added, bias, and lottery compliance. We use this model to assess the … substantive importance of bias in conventional VAM estimates and to construct hybrid value-added estimates that optimally combine …

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 …