| Index | Warner | South Dakota | National |
| Average Test Scores | 72% | 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 | Warner | South Dakota | National |
| Completed 8th grade | 93.6% | 89.1% | 84.3% |
| Completed high school | 91.3% | 86.8% | 83.0% |
| Completed some college | 52.6% | 60.4% | 59.4% |
| Completed associate degree | 33.0% | 38.5% | 38.5% |
| Completed bachelors | 24.7% | 27.5% | 30.3% |
| Completed masters | 6.4% | 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 Warner. Using the proficiency score averages, the average test scores for Warner, SD schools is 72%. The average student to teacher ratio is n/a. In Warner, SD, an average of 93.6% of students have completed 8th grade and an average of 91.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Aberdeen, SD | 29,054 | 53% | 10.0% |
| Mellette, SD | 195 | 50% | 4.2% |
| Warner, SD | 518 | 72% | 50.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Lake, MS | 518 | 39% | 19.1% |
| Martensdale, IA | 518 | 76% | 57.8% |
| Tremont, MS | 518 | 47% | 2.1% |
| Bridgeport, CA | 519 | 40% | 16.7% |
| Groom, TX | 519 | 55% | 14.1% |
| Warner, SD | 518 | 72% | 50.3% |
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