Abstract: The Michigan Association of Public School Academies (MAPSA) has released data that finds that the average scores of the state's public charters exceeded the average scores of their host districts on 23 of 27 state tests in 2006-07. Michigan's charters delivered 82 to 91 percent proficiency on all tests and exceeded the average scores of their host districts on 23 of 27 MEAP tests (tied on three others and were one point shy on the final test). Individual community data is available for Detroit, Flint, Grand Rapids, and Lansing.