Are Teacher-Level Value-Added Estimates Biased? An Experimental Validation of Non-Experimental Estimates. Thomas J. Kane Douglas O. Staiger HGSE Dartmouth College. All standardized by grade and year . LAUSD Data. Grades 2 through 5 Three Time Periods:
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Thomas J. Kane Douglas O. Staiger
HGSE Dartmouth College
Generate Empirical Bayes estimates (VAj) of teacher effects using a variety of specifications of A, X.Step 1: Estimate a Variety of Non-Experimental Specifications using Pre-Experimental Data
Differencing within each pair, p=1 through 78:Step 2: Test Validity of VAj in Predicting Within-Pair Experimental Differences
Is Teacher-Student Sorting Different in Los Angeles? differences in teacher value added?
(Current experiment won’t help, but STAR experiment might.)
2. Generating Empirical Bayes Estimates of Non-Experimental Teacher Effects
Experimental Study (TN Class-Size Experiment):
Βo =0 (no controls), Βo =1 (“gains”), Βo <1 (“quasi-gains”)