School districts with the most students enrolled in charter schools, 2011-121 Los Angeles 98,576 2 New York City 48,057 3 Detroit 47,086 4 Philadelphia 46,801 5 Chicago 44,870 6 Miami 41,767 7 Houston 40,549 8 New Orleans 32,597 9 Washington, D.C. 31,562 10 Broward County, Fla. 30,438 Source: National Alliance for Public Charter Schools