| Index | St. Lawrence | South Dakota | National |
| Average Test Scores | n/a | 48% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 340 | 79,221 |
| Total private schools | n/a | 76 | 24,874 |
| Total post-secondary schools | n/a | 25 | 7,963 |
| Index | St. Lawrence | South Dakota | National |
| Completed 8th grade | 91.8% | 89.1% | 84.3% |
| Completed high school | 91.8% | 86.8% | 83.0% |
| Completed some college | 48.2% | 60.4% | 59.4% |
| Completed associate degree | 26.4% | 38.5% | 38.5% |
| Completed bachelors | 10.9% | 27.5% | 30.3% |
| Completed masters | 0.9% | 8.1% | 11.5% |
| Completed professional degree | 0.9% | 2.5% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in St. Lawrence. Using the proficiency score averages, the average test scores for St. Lawrence, SD schools is n/a. The average student to teacher ratio is n/a. In St. Lawrence, SD, an average of 91.8% of students have completed 8th grade and an average of 91.8% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Miller, SD | 1,366 | 48% | = 100 |
| St. Lawrence, SD | 167 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Richey, MT | 167 | 50% | 4.2% |
| Hartly, DE | 167 | 62% | 29.2% |
| Port Wing, WI | 167 | 48% | 1.0% |
| Marshall, AK | 168 | 5% | 89.6% |
| Elgin, AZ | 168 | 40% | 17.7% |
| St. Lawrence, SD | 167 | n/a |
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