| Index | Grafton | Iowa | National |
| Average Test Scores | n/a | 69% | 48% |
| Student/Teacher ratio | n/a | 13:1 | 16:1 |
| Total public schools | n/a | 1,101 | 79,221 |
| Total private schools | n/a | 208 | 24,874 |
| Total post-secondary schools | n/a | 96 | 7,963 |
| Index | Grafton | Iowa | National |
| Completed 8th grade | 90.5% | 89.2% | 84.3% |
| Completed high school | 87.7% | 87.7% | 83.0% |
| Completed some college | 50.6% | 59.8% | 59.4% |
| Completed associate degree | 21.7% | 38.4% | 38.5% |
| Completed bachelors | 8.7% | 27.2% | 30.3% |
| Completed masters | 2.8% | 8.7% | 11.5% |
| Completed professional degree | 0.0% | 2.7% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 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, IA schools is n/a. The average student to teacher ratio is n/a. In Grafton, IA, an average of 90.5% of students have completed 8th grade and an average of 87.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| St. Ansgar, IA | 1,144 | 81% | 69.4% |
| Manly, IA | 1,480 | 78% | 61.5% |
| Osage, IA | 3,549 | 70% | 45.1% |
| Northwood, IA | 2,182 | 67% | 39.6% |
| Nora Springs, IA | 1,648 | 67% | 39.1% |
| Grafton, IA | 180 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Wimbledon, ND | 180 | 54% | 11.5% |
| Rentz, GA | 180 | 53% | 10.4% |
| Elida, NM | 180 | 30% | 38.0% |
| Hardyville, KY | 180 | 50% | 3.1% |
| Fort Apache, AZ | 180 | 5% | 89.6% |
| Grafton, IA | 180 | n/a |
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