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Sun March 6, 2011
FREEP questions test score improvements
A newspaper analysis shows standardized test score gains from 34 Michigan schools over a one-year period are statistically improbable.
The Detroit Free Press joined a nationwide investigation with USA Today and other partners. The analysis of millions of test score results found 304 schools in six states and the District of Columbia had test scores so improbable they should be investigated.
The analysis that was specific to Michigan scores found that in 2008 to 2009, 34 schools, including 32 in the Detroit area, had test score deviations that statistical experts say are virtually impossible to explain through improved instruction alone.