| Index | St. Marys | West Virginia | National |
| Average Test Scores | n/a | n/a | 48% |
| Student/Teacher ratio | 14:1 | 15:1 | 16:1 |
| Total public schools | 3 | 509 | 79,221 |
| Total private schools | 1 | 115 | 24,874 |
| Total post-secondary schools | n/a | 78 | 7,963 |
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| Index | St. Marys | West Virginia | National |
| Completed 8th grade | 88.0% | 80.9% | 84.3% |
| Completed high school | 87.2% | 78.6% | 83.0% |
| Completed some college | 46.4% | 44.9% | 59.4% |
| Completed associate degree | 29.8% | 26.3% | 38.5% |
| Completed bachelors | 18.0% | 19.6% | 30.3% |
| Completed masters | 6.2% | 7.7% | 11.5% |
| Completed professional degree | 0.4% | 2.1% | 3.3% |
| Completed doctorate | 0.4% | 0.8% | 1.3% |
There are a total of 3 public schools, 1 private schools and n/a post-secondary schools in St. Marys. Using the proficiency score averages, the average test scores for St. Marys, WV schools is n/a. The average student to teacher ratio is 14:1. In St. Marys, WV, an average of 88.0% of students have completed 8th grade and an average of 87.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Newport, OH | 1,310 | 77% | 60.4% |
| Lower Salem, OH | 126 | 77% | 60.4% |
| Marietta, OH | 13,551 | 62% | 29.8% |
| Matamoras, OH | 1,045 | 57% | 18.8% |
| St. Marys, WV | 2,050 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Belford, NJ | 2,049 | 60% | 24.0% |
| Warroad, MN | 2,051 | 57% | 18.8% |
| Lexington, IL | 2,049 | 36% | 24.3% |
| Grandview, TX | 2,051 | 64% | 33.7% |
| Honey Brook, PA | 2,051 | 70% | 44.8% |
| St. Marys, WV | 2,050 | n/a |
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