| Index | Hartford | Ohio | National |
| Average Test Scores | n/a | 61% | 48% |
| Student/Teacher ratio | n/a | 17:1 | 16:1 |
| Total public schools | n/a | 3,650 | 79,221 |
| Total private schools | n/a | 1,000 | 24,874 |
| Total post-secondary schools | n/a | 393 | 7,963 |
| Index | Hartford | Ohio | National |
| Completed 8th grade | 87.8% | 86.9% | 84.3% |
| Completed high school | 87.4% | 85.6% | 83.0% |
| Completed some college | 41.4% | 55.7% | 59.4% |
| Completed associate degree | 24.3% | 35.1% | 38.5% |
| Completed bachelors | 9.5% | 26.7% | 30.3% |
| Completed masters | 1.4% | 10.0% | 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 Hartford. Using the proficiency score averages, the average test scores for Hartford, OH schools is n/a. The average student to teacher ratio is n/a. In Hartford, OH, an average of 87.8% of students have completed 8th grade and an average of 87.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Granville, OH | 5,829 | 90% | 87.5% |
| Galena, OH | 753 | 89% | 85.9% |
| New Albany, OH | 11,085 | 87% | 81.3% |
| Sunbury, OH | 5,934 | 79% | 65.3% |
| Gahanna, OH | 35,442 | 76% | 58.6% |
| Hartford, OH | 355 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Branch, LA | 355 | 54% | 11.5% |
| Ransom, IL | 355 | 20% | 58.3% |
| Gridley, KS | 355 | 25% | 47.9% |
| Spottsville, KY | 355 | 72% | 50.0% |
| Sussex, VA | 355 | 78% | 63.0% |
| Hartford, OH | 355 | n/a |
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