Gate’s initiative turned out as good as his Windows Me(h).
Remember the excitement about using test scores to measure teacher effectiveness? Remember Raj Chetty, who expected to win a Nobel Prize for his research on teacher effectiveness tied to test scores? Remember the heated debate about whether a single teacher could produce huge lifetime gains in earnings? Remember when reformers confidently asserted that they knew how to identify the best and worst teachers (by the rise or fall of student scores)? Remember the starry-eyed predictions that schools would get rid of all the “bad” teachers and would soon have only “great” teachers. The architects of Obama’s Race to the Top were so impressed by these claims that they required states to change their laws to require this method of evaluating teachers. Most such laws are still in force.
A new study by the Rand Institute finds that this initiative failed. The Gates Foundation spent $575 million to implement this policy…
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