| Index | Hartford | Illinois | National |
| Average Test Scores | 23% | 33% | 48% |
| Student/Teacher ratio | 24:1 | 18:1 | 16:1 |
| Total public schools | 1 | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Hartford | Illinois | National |
| Completed 8th grade | 81.2% | 86.2% | 84.3% |
| Completed high school | 80.4% | 84.7% | 83.0% |
| Completed some college | 42.9% | 61.8% | 59.4% |
| Completed associate degree | 17.5% | 40.7% | 38.5% |
| Completed bachelors | 6.8% | 32.9% | 30.3% |
| Completed masters | 0.3% | 12.7% | 11.5% |
| Completed professional degree | 0.0% | 3.4% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of 1 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, IL schools is 23%. The average student to teacher ratio is 24:1. In Hartford, IL, an average of 81.2% of students have completed 8th grade and an average of 80.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Clayton, MO | 16,763 | 73% | 52.7% |
| Brentwood, MO | 7,986 | 70% | 45.6% |
| Maryville, IL | 7,962 | 65% | 34.4% |
| Maplewood, MO | 8,073 | 61% | 26.6% |
| Rock Hill, MO | 4,634 | 58% | 20.1% |
| Hartford, IL | 1,769 | 23% | 53.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Campbell, MO | 1,768 | 45% | 7.3% |
| Columbia City, OR | 1,770 | 35% | 28.1% |
| Mayo, SC | 1,770 | 60% | 24.0% |
| Stamps, AR | 1,770 | 25% | 49.0% |
| Fort Deposit, AL | 1,770 | 21% | 56.8% |
| Hartford, IL | 1,769 | 23% | 53.1% |
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