| Index | Long Lake | 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 | Long Lake | South Dakota | National |
| Completed 8th grade | 93.3% | 89.1% | 84.3% |
| Completed high school | 93.3% | 86.8% | 83.0% |
| Completed some college | 60.0% | 60.4% | 59.4% |
| Completed associate degree | 46.7% | 38.5% | 38.5% |
| Completed bachelors | 20.0% | 27.5% | 30.3% |
| Completed masters | 0.0% | 8.1% | 11.5% |
| Completed professional degree | 0.0% | 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 Long Lake. Using the proficiency score averages, the average test scores for Long Lake, SD schools is n/a. The average student to teacher ratio is n/a. In Long Lake, SD, an average of 93.3% of students have completed 8th grade and an average of 93.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Leola, SD | 435 | 58% | 19.8% |
| Ashley, ND | 599 | 55% | 14.6% |
| Long Lake, SD | 31 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Raymond, SD | 31 | 50% | 4.2% |
| Forbes, ND | 31 | 20% | 58.3% |
| Creston, CA | 31 | 50% | 4.2% |
| Mosquero, NM | 29 | 50% | 4.2% |
| Langdon, KS | 33 | 22% | 54.2% |
| Long Lake, SD | 31 | n/a |
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