When a measurement becomes the goal, it is no longer a reliable indicator of success. First observed by social scientist Donald T. Campbell, this problem corrupts data in all facets of life — from teachers who “teach to the test” to social media stars who “beg for likes”. To serve America’s students well, AEI’s Rick Hess urges school reformers to heed Campbell’s Law.
ARTICLE – Education reforms should obey Campbell’s Law https://goo.gl/SR5J3g
ARTICLE – Do Impacts on Test Scores Even Matter? Lessons from Long-Run Outcomes in School Choice Research https://goo.gl/ohSS4U
SOURCE — New York Times; Giving doctor’s Grades https://goo.gl/LXhwTo
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