Charter School Age
2008-2009 National
Charter Schools
| Metrics | # | % |
| Number of Years Open | ||
| Open 1-3 Years | 1,351 | 29.1% |
| Open 4-6 Years | 1,224 | 26.4% |
| Open 7-9 Years | 938 | 20.2% |
| Open 10+ Years | 1,122 | 24.2% |
| Average Number of Years Open | ||
| Average Number of Years Open | 6.3 | |
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