| Index | St. Clair | Minnesota | National |
| Average Test Scores | 60% | 52% | 48% |
| Student/Teacher ratio | n/a | 16:1 | 16:1 |
| Total public schools | n/a | 2,224 | 79,221 |
| Total private schools | n/a | 477 | 24,874 |
| Total post-secondary schools | n/a | 140 | 7,963 |
| Index | St. Clair | Minnesota | National |
| Completed 8th grade | 92.7% | 90.5% | 84.3% |
| Completed high school | 91.9% | 89.5% | 83.0% |
| Completed some college | 57.7% | 66.9% | 59.4% |
| Completed associate degree | 40.9% | 45.2% | 38.5% |
| Completed bachelors | 23.8% | 34.2% | 30.3% |
| Completed masters | 4.9% | 11.5% | 11.5% |
| Completed professional degree | 4.5% | 3.5% | 3.3% |
| Completed doctorate | 1.4% | 1.4% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in St. Clair. Using the proficiency score averages, the average test scores for St. Clair, MN schools is 60%. The average student to teacher ratio is n/a. In St. Clair, MN, an average of 92.7% of students have completed 8th grade and an average of 91.9% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Good Thunder, MN | 558 | 82% | 70.8% |
| North Mankato, MN | 13,903 | 71% | 48.4% |
| Eagle Lake, MN | 3,064 | 71% | 47.9% |
| Waterville, MN | 1,841 | 69% | 42.7% |
| Mapleton, MN | 1,606 | 59% | 21.9% |
| St. Clair, MN | 764 | 60% | 24.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Colo, IA | 764 | 80% | 65.6% |
| Condon, OR | 764 | 49% | 1.0% |
| Conneautville, PA | 764 | 58% | 20.3% |
| Highland Hills, OH | 764 | 42% | 12.0% |
| Seligman, AZ | 764 | 40% | 16.7% |
| St. Clair, MN | 764 | 60% | 24.5% |
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