| 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% |
Here are the best places to live in Missouri
Check out the 10 safest cities in Missouri
See the best places to live in St. Peters
These are the largest cities in Missouri