Data Available: 1999-00 through 2011-12
NAPCS counts public charter schools in the total number of schools if the school shows enrollment in the official fall member count data file for that academic year or if the state department of education has not indicated that the school closed.
| Metrics | # | % |
| Schools | ||
| Number of Schools | 257 | |
| % of Charter Schools to All Public Schools | 7.1% | |
| Average Number of Years Open | ||
| Average Number of Years Open | 10.0 | |
| Number of Years Open | ||
| Open 1-3 Years | 43 | 16.7% |
| Open 4-6 Years | 17 | 6.6% |
| Open 7-9 Years | 46 | 17.9% |
| Open 10+ Years | 151 | 58.8% |
| Growth | ||
| Number of New Charter Schools in Fall of Academic Year | 19 | |
| % Growth in Number of Charter Schools | 6.6% | |
| Schools by Grade Levels | ||
| Elementary Schools | 135 | 52.5% |
| Middle Schools | 2 | 0.8% |
| High Schools | 29 | 11.3% |
| Middle/High Schools | 11 | 4.3% |
| Elementary/Middle/High Schools | 36 | 14.0% |
| Ungraded | 44 | |
| Conversion/Start-up | ||
| Start-Up | 254 | 98.8% |
| Metrics | # |
| Schools | |
| Number of Schools | 3,368 |