I've had my criticisms of PISA in the past. But it's hard to top this: "The New York Times reports that errors in the testing booklet of the Program for International Student Assessment (PISA) has caused the Organization for Economic Cooperation and Development to invalidate all of the American test results." Chris Lehmann asks, "What of the kids who took that test and halfway through it, realized that the test was wrong but couldn't do anything about it? What of the kids who, a few years ago, took the NY State Physics Regents and then had to sweat out their high school graduation after they bombed it, waiting until the state admitted that they screwed up the test?"
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