| Index | Lemmon | South Dakota | National |
| Average Test Scores | 50% | 48% | 48% |
| Student/Teacher ratio | 12:1 | 14:1 | 16:1 |
| Total public schools | 3 | 340 | 79,221 |
| Total private schools | n/a | 76 | 24,874 |
| Total post-secondary schools | n/a | 25 | 7,963 |
| Index | Lemmon | South Dakota | National |
| Completed 8th grade | 83.1% | 89.1% | 84.3% |
| Completed high school | 77.7% | 86.8% | 83.0% |
| Completed some college | 50.0% | 60.4% | 59.4% |
| Completed associate degree | 27.5% | 38.5% | 38.5% |
| Completed bachelors | 20.2% | 27.5% | 30.3% |
| Completed masters | 6.2% | 8.1% | 11.5% |
| Completed professional degree | 2.2% | 2.5% | 3.3% |
| Completed doctorate | 0.6% | 1.2% | 1.3% |
There are a total of 3 public schools, n/a private schools and n/a post-secondary schools in Lemmon. Using the proficiency score averages, the average test scores for Lemmon, SD schools is 50%. The average student to teacher ratio is 12:1. In Lemmon, SD, an average of 83.1% of students have completed 8th grade and an average of 77.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Lemmon, SD | 1,288 | 50% | 3.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Walnut Grove, CA | 1,288 | 55% | 13.5% |
| Tyler, MN | 1,289 | 45% | 6.3% |
| Russiaville, IN | 1,289 | 59% | 23.3% |
| Muenster, TX | 1,287 | 76% | 57.8% |
| Glide, OR | 1,287 | 47% | 3.1% |
| Lemmon, SD | 1,288 | 50% | 3.8% |
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