| Index | Cardington | Ohio | National |
| Average Test Scores | 51% | 61% | 48% |
| Student/Teacher ratio | 16:1 | 17:1 | 16:1 |
| Total public schools | 4 | 3,650 | 79,221 |
| Total private schools | n/a | 1,000 | 24,874 |
| Total post-secondary schools | n/a | 393 | 7,963 |
| Index | Cardington | Ohio | National |
| Completed 8th grade | 81.2% | 86.9% | 84.3% |
| Completed high school | 78.4% | 85.6% | 83.0% |
| Completed some college | 33.0% | 55.7% | 59.4% |
| Completed associate degree | 14.1% | 35.1% | 38.5% |
| Completed bachelors | 7.8% | 26.7% | 30.3% |
| Completed masters | 1.9% | 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 4 public schools, n/a private schools and n/a post-secondary schools in Cardington. Using the proficiency score averages, the average test scores for Cardington, OH schools is 51%. The average student to teacher ratio is 16:1. In Cardington, OH, an average of 81.2% of students have completed 8th grade and an average of 78.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Delaware, OH | 41,818 | 75% | 55.2% |
| Caledonia, OH | 665 | 73% | 51.7% |
| Centerburg, OH | 1,930 | 73% | 51.4% |
| Ashley, OH | 1,672 | 67% | 39.6% |
| Marengo, OH | 269 | 64% | 32.3% |
| Cardington, OH | 1,571 | 51% | 6.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Anderson Island, WA | 1,571 | 50% | 4.2% |
| Canajoharie, NY | 1,571 | 57% | 19.1% |
| Napavine, WA | 1,571 | 57% | 19.3% |
| Loma, CO | 1,571 | 27% | 43.8% |
| Random Lake, WI | 1,571 | 39% | 18.4% |
| Cardington, OH | 1,571 | 51% | 6.5% |
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