Orleans Parish, La. 57%
Washington, D.C. 36%
Detroit 32%
Kansas City, Mo. 29%
Dayton, Ohio 27%
Youngstown, Ohio 26%
St. Louis 25%
Flint, Mich. 24%
Gary, Ind. 23%
Phoenix Union HSD (tie) 22%
Minneapolis (tie) 22%
Source: National Alliance for Public Charter Schools