I think the long USA Today story on widespread and persistent wrong-to-right test erasures in DC had more than enough detail to show that the city needs an independent investigation of what happened, not the DCPS-sponsored review that had so many holes, including nobody talking to the kids who took the tests.

But people who are looking at the story with fresh eyes tell me that the most powerful evidence for them is the long list of dozens of DC schools flagged for unusual numbers of erasures, available on the USA Today Web site. Here it is:
      http://www.usatoday.com/news/education/2011-03-27-school-test-table_N.htm