This from Schools Matter : Evolution (?) of Arne Duncan's position on the use of standardized tests for teacher evaluation Arne Duncan’s position on the use of value-added test scores seems to have changed in the last two years. In August, 2010, he seems to be saying that test score gains are a measure of teacher effectiveness. In May, 2011, he seems to want to use value-added measures as part of teacher evaluation, and in February, 2012 he seems to be against the whole idea. August, 2010...
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