| Index | St. Clairsville | Ohio | National |
| Average Test Scores | 70% | 61% | 48% |
| Student/Teacher ratio | 15:1 | 17:1 | 16:1 |
| Total public schools | 4 | 3,650 | 79,221 |
| Total private schools | 1 | 1,000 | 24,874 |
| Total post-secondary schools | 1 | 393 | 7,963 |
| Index | St. Clairsville | Ohio | National |
| Completed 8th grade | 93.7% | 86.9% | 84.3% |
| Completed high school | 92.9% | 85.6% | 83.0% |
| Completed some college | 65.2% | 55.7% | 59.4% |
| Completed associate degree | 38.5% | 35.1% | 38.5% |
| Completed bachelors | 29.2% | 26.7% | 30.3% |
| Completed masters | 10.8% | 10.0% | 11.5% |
| Completed professional degree | 3.6% | 2.7% | 3.3% |
| Completed doctorate | 1.3% | 1.1% | 1.3% |
There are a total of 4 public schools, 1 private schools and 1 post-secondary schools in St. Clairsville. Using the proficiency score averages, the average test scores for St. Clairsville, OH schools is 70%. The average student to teacher ratio is 15:1. In St. Clairsville, OH, an average of 93.7% of students have completed 8th grade and an average of 92.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Brilliant, OH | 1,302 | 75% | 55.2% |
| Adena, OH | 682 | 65% | 34.4% |
| Barnesville, OH | 3,562 | 63% | 31.3% |
| Bellaire, OH | 4,057 | 63% | 31.3% |
| Shadyside, OH | 3,788 | 63% | 30.7% |
| St. Clairsville, OH | 5,080 | 70% | 46.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Chesterbrook, PA | 5,080 | 76% | 58.3% |
| Monee, IL | 5,080 | 41% | 15.6% |
| Glennville, GA | 5,081 | 40% | 17.7% |
| Bristol, WI | 5,079 | 56% | 15.6% |
| Berkeley, IL | 5,079 | 20% | 59.4% |
| St. Clairsville, OH | 5,080 | 70% | 46.2% |
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