| Index | Bay St. Louis | Mississippi | National |
| Average Test Scores | 49% | 40% | 48% |
| Student/Teacher ratio | 15:1 | 16:1 | 16:1 |
| Total public schools | 2 | 893 | 79,221 |
| Total private schools | n/a | 206 | 24,874 |
| Total post-secondary schools | n/a | 68 | 7,963 |
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| Index | Bay St. Louis | Mississippi | National |
| Completed 8th grade | 85.7% | 78.6% | 84.3% |
| Completed high school | 84.8% | 76.7% | 83.0% |
| Completed some college | 62.2% | 52.5% | 59.4% |
| Completed associate degree | 32.7% | 29.8% | 38.5% |
| Completed bachelors | 25.6% | 21.0% | 30.3% |
| Completed masters | 8.5% | 7.9% | 11.5% |
| Completed professional degree | 2.3% | 2.2% | 3.3% |
| Completed doctorate | 0.8% | 0.9% | 1.3% |
There are a total of 2 public schools, n/a private schools and n/a post-secondary schools in Bay St. Louis. Using the proficiency score averages, the average test scores for Bay St. Louis, MS schools is 49%. The average student to teacher ratio is 15:1. In Bay St. Louis, MS, an average of 85.7% of students have completed 8th grade and an average of 84.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Long Beach, MS | 16,179 | 63% | 31.7% |
| Pass Christian, MS | 6,223 | 61% | 27.5% |
| Kiln, MS | 2,513 | 59% | 23.2% |
| Bay St. Louis, MS | 13,930 | 49% | 2.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Celina, TX | 13,935 | 65% | 36.3% |
| Ridge, NY | 13,941 | 57% | 18.8% |
| Canton, IL | 13,910 | 33% | 31.5% |
| Snoqualmie, WA | 13,954 | 64% | 34.2% |
| Waycross, GA | 13,957 | 45% | 6.5% |
| Bay St. Louis, MS | 13,930 | 49% | 2.9% |
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