Teacher Quality at the High-School Level: The Importance of Accounting for Tracks
Unlike in elementary school, high-school teacher effects may be confounded with both selection to tracks and unobserved track-level treatments. I document sizable confounding track effects, and show that traditional tests for the existence of teacher effects are likely biased. After accounting for these biases, high-school algebra and English teachers have much smaller test-score effects than found in previous studies. Moreover, unlike in elementary school, value-added estimates are weak predictors of teachers' future performance. Results indicate that either (a) teachers are less influential in high school than in elementary school, or (b) test scores are a poor metric to measure teacher quality at the high-school level.
Document Object Identifier (DOI): 10.3386/w17722
"Teacher Quality at the High-School Level: The Importance of Accounting for Tracks" forthcoming Journal of Labor Economics. (available as NBER Working Paper 17722) citation courtesy of
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