ERIC Number: EJ1049737
Record Type: Journal
Publication Date: 2015
Abstractor: As Provided
Can Value-Added Measures of Teacher Performance Be Trusted?
Guarino, Cassandra M.; Reckase, Mark D.; Wooldridge, Jeffrey M.
Education Finance and Policy, v10 n1 p117-156 Win 2015
We investigate whether commonly used value-added estimation strategies produce accurate estimates of teacher effects under a variety of scenarios. We estimate teacher effects in simulated student achievement data sets that mimic plausible types of student grouping and teacher assignment scenarios. We find that no one method accurately captures true teacher effects in all scenarios, and the potential for misclassifying teachers as high- or low-performing can be substantial. A dynamic ordinary least squares estimator is more robust across scenarios than other estimators. Misspecifying dynamic relationships can exacerbate estimation problems.
Descriptors: Teacher Evaluation, Teacher Effectiveness, Achievement Gains, Merit Rating, Simulation, Academic Achievement, Student Records, Vignettes, Scoring Rubrics, High Achievement, Low Achievement, Least Squares Statistics, Robustness (Statistics), Evaluation Methods, Evaluation Research, Data Analysis
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Publication Type: Journal Articles; Reports - Research
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