According to the New York Times, the Educational Resource Board–the company that administers the Independent School Entrance Exam–admitted that it had wrongly scored at least 7,000 upper level tests. Some of the re-graded tests resulted in dramatically higher scores. This admission of error comes after most parents have already decided where their children are attending school next year. The report can be read in full at the New York Times:
http://www.nytimes.com/2011/04/09/nyregion/09tests.html?src=recg