| Index | St. Peters | Missouri | National |
| Average Test Scores | 63% | 44% | 48% |
| Student/Teacher ratio | 15:1 | 14:1 | 16:1 |
| Total public schools | 12 | 1,899 | 79,221 |
| Total private schools | 9 | 531 | 24,874 |
| Total post-secondary schools | 1 | 213 | 7,963 |
| Index | St. Peters | Missouri | National |
| Completed 8th grade | 92.2% | 86.0% | 84.3% |
| Completed high school | 91.6% | 84.2% | 83.0% |
| Completed some college | 69.7% | 57.7% | 59.4% |
| Completed associate degree | 46.8% | 35.2% | 38.5% |
| Completed bachelors | 35.6% | 27.6% | 30.3% |
| Completed masters | 12.3% | 10.4% | 11.5% |
| Completed professional degree | 1.6% | 2.8% | 3.3% |
| Completed doctorate | 0.8% | 1.2% | 1.3% |
There are a total of 12 public schools, 9 private schools and 1 post-secondary schools in St. Peters. Using the proficiency score averages, the average test scores for St. Peters, MO schools is 63%. The average student to teacher ratio is 15:1. In St. Peters, MO, an average of 92.2% of students have completed 8th grade and an average of 91.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Clayton, MO | 16,763 | 73% | 52.7% |
| Dardenne Prairie, MO | 13,385 | 73% | 51.0% |
| Lake St. Louis, MO | 16,357 | 71% | 48.4% |
| Brentwood, MO | 7,986 | 70% | 45.6% |
| Weldon Spring, MO | 5,536 | 70% | 45.5% |
| St. Peters, MO | 57,536 | 63% | 31.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Towson, MD | 57,542 | 51% | 6.9% |
| Santee, CA | 57,407 | 53% | 9.6% |
| Midwest City, OK | 57,392 | 20% | 58.2% |
| Richland, WA | 57,353 | 58% | 20.1% |
| Bradenton, FL | 57,346 | 50% | 3.3% |
| St. Peters, MO | 57,536 | 63% | 31.5% |
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