| Index | St. Henry | Ohio | National |
| Average Test Scores | 85% | 61% | 48% |
| Student/Teacher ratio | 17:1 | 17:1 | 16:1 |
| Total public schools | 3 | 3,650 | 79,221 |
| Total private schools | n/a | 1,000 | 24,874 |
| Total post-secondary schools | n/a | 393 | 7,963 |
| Index | St. Henry | Ohio | National |
| Completed 8th grade | 91.3% | 86.9% | 84.3% |
| Completed high school | 90.5% | 85.6% | 83.0% |
| Completed some college | 49.2% | 55.7% | 59.4% |
| Completed associate degree | 33.5% | 35.1% | 38.5% |
| Completed bachelors | 22.2% | 26.7% | 30.3% |
| Completed masters | 8.0% | 10.0% | 11.5% |
| Completed professional degree | 0.7% | 2.7% | 3.3% |
| Completed doctorate | 0.2% | 1.1% | 1.3% |
There are a total of 3 public schools, n/a private schools and n/a post-secondary schools in St. Henry. Using the proficiency score averages, the average test scores for St. Henry, OH schools is 85%. The average student to teacher ratio is 17:1. In St. Henry, OH, an average of 91.3% of students have completed 8th grade and an average of 90.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Russia, OH | 756 | 92% | 92.2% |
| Minster, OH | 2,784 | 90% | 87.0% |
| Fort Loramie, OH | 1,430 | 89% | 84.4% |
| Versailles, OH | 2,793 | 88% | 83.3% |
| New Bremen, OH | 2,798 | 87% | 81.8% |
| St. Henry, OH | 2,738 | 85% | 77.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Casselton, ND | 2,738 | 43% | 9.7% |
| Arcadia, LA | 2,738 | 51% | 5.7% |
| Osseo, MN | 2,738 | 52% | 8.0% |
| Wolf Point, MT | 2,739 | 23% | 52.6% |
| Hardinsburg, KY | 2,740 | 65% | 34.4% |
| St. Henry, OH | 2,738 | 85% | 77.8% |
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