States with most charter school students, November 2009
| California | 299,742 |
| Arizona | 132,229 |
| Florida | 131,183 |
| Texas | 129,853 |
| Michigan | 99,660 |
| Ohio | 94,171 |
| Colorado | 63,799 |
| Pennsylvania | 61,823 |
| Georgia | 47,697 |
| New York | 44,000 |
| Source: The Center for Education Reform | |