| Index | Grafton | Illinois | National |
| Average Test Scores | 65% | 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 |
| Index | Grafton | Illinois | National |
| Completed 8th grade | 87.5% | 86.2% | 84.3% |
| Completed high school | 87.0% | 84.7% | 83.0% |
| Completed some college | 58.7% | 61.8% | 59.4% |
| Completed associate degree | 37.9% | 40.7% | 38.5% |
| Completed bachelors | 29.2% | 32.9% | 30.3% |
| Completed masters | 15.7% | 12.7% | 11.5% |
| Completed professional degree | 4.2% | 3.4% | 3.3% |
| Completed doctorate | 2.6% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Grafton. Using the proficiency score averages, the average test scores for Grafton, IL schools is 65%. The average student to teacher ratio is n/a. In Grafton, IL, an average of 87.5% of students have completed 8th grade and an average of 87.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| St. Peters, MO | 57,536 | 63% | 31.5% |
| O'Fallon, MO | 88,132 | 61% | 27.1% |
| St. Charles, MO | 70,650 | 55% | 15.4% |
| Bridgeton, MO | 11,577 | 47% | 3.1% |
| Hardin, IL | 831 | 44% | 7.8% |
| Grafton, IL | 672 | 65% | 35.4% |
| City | Population | Avg. Test Scores | National Avg. |
| Garibaldi, OR | 672 | 37% | 22.9% |
| Merrimac, WI | 672 | 45% | 6.3% |
| Grand Isle, LA | 672 | 77% | 60.4% |
| New Home, TX | 672 | 75% | 56.3% |
| Campbell, NY | 672 | 57% | 18.8% |
| Grafton, IL | 672 | 65% | 35.4% |
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