| Index | Lake Poinsett | 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 | Lake Poinsett | South Dakota | National |
| Completed 8th grade | 96.4% | 89.1% | 84.3% |
| Completed high school | 96.4% | 86.8% | 83.0% |
| Completed some college | 71.0% | 60.4% | 59.4% |
| Completed associate degree | 45.8% | 38.5% | 38.5% |
| Completed bachelors | 36.7% | 27.5% | 30.3% |
| Completed masters | 13.2% | 8.1% | 11.5% |
| Completed professional degree | 2.7% | 2.5% | 3.3% |
| Completed doctorate | 1.6% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Lake Poinsett. Using the proficiency score averages, the average test scores for Lake Poinsett, SD schools is n/a. The average student to teacher ratio is n/a. In Lake Poinsett, SD, an average of 96.4% of students have completed 8th grade and an average of 96.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Hayti, SD | 391 | 64% | 32.6% |
| Arlington, SD | 1,007 | 57% | 19.5% |
| Castlewood, SD | 582 | 57% | 18.2% |
| Lake Preston, SD | 448 | 53% | 11.1% |
| Estelline, SD | 858 | 51% | 5.6% |
| Lake Poinsett, SD | 480 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Buckholts, TX | 480 | 52% | 8.3% |
| Loganton, PA | 481 | 35% | 27.1% |
| La Grange, WY | 479 | 50% | 4.2% |
| Oklee, MN | 479 | 50% | 3.1% |
| Carmichaels, PA | 481 | 50% | 3.5% |
| Lake Poinsett, SD | 480 | n/a |
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