(percentage of entering freshman class that graduated in 4 years)
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| Vermont | 88.6% |
| Wisconsin | 88.5% |
| Iowa | 86.5% |
| Minnesota | 86.5% |
| Nebraska | 86.3% |
| New Jersey | 84.4% |
| North Dakota | 83.1% |
| Pennsylvania | 83.0% |
| South Dakota | 82.5% |
| Missouri | 81.9% |
| Source: National Center for Education Statistics | |
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