| Index | Lennox | South Dakota | National |
| Average Test Scores | 58% | 48% | 48% |
| Student/Teacher ratio | 14:1 | 14:1 | 16:1 |
| Total public schools | 5 | 340 | 79,221 |
| Total private schools | n/a | 76 | 24,874 |
| Total post-secondary schools | n/a | 25 | 7,963 |
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| Index | Lennox | South Dakota | National |
| Completed 8th grade | 91.1% | 89.1% | 84.3% |
| Completed high school | 88.4% | 86.8% | 83.0% |
| Completed some college | 56.5% | 60.4% | 59.4% |
| Completed associate degree | 36.7% | 38.5% | 38.5% |
| Completed bachelors | 18.3% | 27.5% | 30.3% |
| Completed masters | 3.6% | 8.1% | 11.5% |
| Completed professional degree | 0.3% | 2.5% | 3.3% |
| Completed doctorate | 0.3% | 1.2% | 1.3% |
There are a total of 5 public schools, n/a private schools and n/a post-secondary schools in Lennox. Using the proficiency score averages, the average test scores for Lennox, SD schools is 58%. The average student to teacher ratio is 14:1. In Lennox, SD, an average of 91.1% of students have completed 8th grade and an average of 88.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Parker, SD | 900 | 57% | 19.1% |
| Tea, SD | 5,910 | 57% | 18.8% |
| Harrisburg, SD | 6,669 | 54% | 13.3% |
| Viborg, SD | 823 | 50% | 4.2% |
| Sioux Falls, SD | 185,812 | 48% | 0.7% |
| Lennox, SD | 2,519 | 58% | 20.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Cumberland, WI | 2,519 | 41% | 15.0% |
| Lawson, MO | 2,519 | 55% | 14.9% |
| Hallowell, ME | 2,518 | 47% | 2.1% |
| Willamina, OR | 2,520 | 23% | 52.1% |
| Crooksville, OH | 2,518 | 56% | 16.3% |
| Lennox, SD | 2,519 | 58% | 20.1% |
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