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BREAKING NEWS: American Statistical Association Issues Caution on Use of VAM

Diane Ravitch's blog

The central feature of the Obama administration’s $5 billion “Race to the Top” program was sharply deconstructed and refuted last week by the American Statistical Association, one of the nation’s leading scholarly organizations. Spurred on by the administration’s combination of federal cash and mandates, most states are now using student test scores to rank and evaluate teachers. This method of evaluating teachers by test scores is called value-added measurement, or VAM. Teachers’ compensation, their tenure, bonuses, and other rewards and sanctions are tied directly to the rise or fall of their student test scores, which the Obama administration considers a good measure of teacher quality.

Secretary Arne Duncan believes so strongly in VAM that he has threatened to punish Washington state for refusing to adopt this method of evaluating teachers and principals. In New York, a state court fined New York City $150 million for failing to agree on…

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