| Index | Columbus Grove | Ohio | National |
| Average Test Scores | 78% | 61% | 48% |
| Student/Teacher ratio | 19:1 | 17:1 | 16:1 |
| Total public schools | 3 | 3,650 | 79,221 |
| Total private schools | 1 | 1,000 | 24,874 |
| Total post-secondary schools | n/a | 393 | 7,963 |
| Index | Columbus Grove | Ohio | National |
| Completed 8th grade | 92.8% | 86.9% | 84.3% |
| Completed high school | 92.4% | 85.6% | 83.0% |
| Completed some college | 52.9% | 55.7% | 59.4% |
| Completed associate degree | 28.4% | 35.1% | 38.5% |
| Completed bachelors | 17.0% | 26.7% | 30.3% |
| Completed masters | 7.2% | 10.0% | 11.5% |
| Completed professional degree | 0.7% | 2.7% | 3.3% |
| Completed doctorate | 0.5% | 1.1% | 1.3% |
There are a total of 3 public schools, 1 private schools and n/a post-secondary schools in Columbus Grove. Using the proficiency score averages, the average test scores for Columbus Grove, OH schools is 78%. The average student to teacher ratio is 19:1. In Columbus Grove, OH, an average of 92.8% of students have completed 8th grade and an average of 92.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Ottoville, OH | 948 | 90% | 88.0% |
| Kalida, OH | 1,713 | 88% | 83.9% |
| Miller City, OH | 148 | 87% | 80.9% |
| Bluffton, OH | 4,159 | 85% | 77.4% |
| Delphos, OH | 7,315 | 82% | 70.1% |
| Columbus Grove, OH | 1,808 | 78% | 63.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Haubstadt, IN | 1,808 | 61% | 27.1% |
| Elizabeth, CO | 1,808 | 43% | 10.2% |
| Westwood, KS | 1,808 | 70% | 44.8% |
| Lost Hills, CA | 1,809 | 31% | 34.7% |
| Ogden, IA | 1,809 | 82% | 71.2% |
| Columbus Grove, OH | 1,808 | 78% | 63.2% |
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