Success Rates Skewed When Failure Is Excluded

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To the Editor:

It is easy to have a very high success rate if you can exclude almost all of the failures from the denominator (“Study Stings KIPP on Attrition Rates,” Education Week, April 6, 2011). KIPP charter middle schools enroll a significantly higher proportion of African-American students than the local school districts from which they draw, but 40 percent of the black males they enroll leave between grades 6 and 8, says a new nationwide study by researchers at Western Michigan University.

Rob Bligh
Omaha, Neb.

Vol. 30, Issue 28, Page 33

Published in Print: April 20, 2011, as Success Rates Skewed When Failure Is Excluded
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