| Index | Grantfork | Illinois | National |
| Average Test Scores | n/a | 33% | 48% |
| Student/Teacher ratio | n/a | 18:1 | 16:1 |
| Total public schools | n/a | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
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| Index | Grantfork | Illinois | National |
| Completed 8th grade | 89.7% | 86.2% | 84.3% |
| Completed high school | 89.7% | 84.7% | 83.0% |
| Completed some college | 63.7% | 61.8% | 59.4% |
| Completed associate degree | 36.3% | 40.7% | 38.5% |
| Completed bachelors | 23.5% | 32.9% | 30.3% |
| Completed masters | 8.1% | 12.7% | 11.5% |
| Completed professional degree | 3.8% | 3.4% | 3.3% |
| Completed doctorate | 0.4% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Grantfork. Using the proficiency score averages, the average test scores for Grantfork, IL schools is n/a. The average student to teacher ratio is n/a. In Grantfork, IL, an average of 89.7% of students have completed 8th grade and an average of 89.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Aviston, IL | 2,173 | 79% | 63.5% |
| St. Jacob, IL | 1,529 | 67% | 39.6% |
| Worden, IL | 875 | 57% | 18.8% |
| Alhambra, IL | 676 | 55% | 14.6% |
| Marine, IL | 994 | 55% | 13.5% |
| Grantfork, IL | 475 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Diagonal, IA | 475 | 78% | 61.5% |
| Kinde, MI | 475 | 35% | 28.1% |
| Garden Valley, ID | 475 | 60% | 24.0% |
| Bonanza, OR | 475 | 41% | 15.1% |
| Churdan, IA | 476 | 78% | 61.5% |
| Grantfork, IL | 475 | n/a |
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