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Goldhaber, Dan; Theobald, Roddy – Carnegie Foundation for the Advancement of Teaching, 2012
There are good reasons for re-thinking teacher evaluation. Evaluation systems in most school districts appear to be far from rigorous. A recent study showed that more than 99 percent of teachers in a number of districts were rated "satisfactory," which does not comport with empirical evidence that teachers differ substantially from each…
Descriptors: Academic Achievement, Evidence, Teacher Evaluation, Educational Testing
Loeb, Susanna; Candelaria, Christopher A. – Carnegie Foundation for the Advancement of Teaching, 2012
Value-added models measure teacher performance by the test score gains of their students, adjusted for a variety of factors such as the performance of students when they enter the class. The measures are based on desired student outcomes such as math and reading scores, but they have a number of potential drawbacks. One of them is the…
Descriptors: Academic Achievement, Teacher Effectiveness, Scores, Peer Influence