| 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 |
| 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 | 876 | 57% | 19.1% |
| Tea, SD | 5,714 | 57% | 18.8% |
| Harrisburg, SD | 6,420 | 54% | 13.3% |
| Viborg, SD | 793 | 50% | 4.2% |
| Sioux Falls, SD | 180,927 | 48% | 0.7% |
| Lennox, SD | 2,432 | 58% | 20.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Brundidge, AL | 2,432 | 41% | 14.6% |
| Ashford, AL | 2,431 | 41% | 14.1% |
| Kearny, AZ | 2,431 | 25% | 49.0% |
| New London, IA | 2,433 | 61% | 26.6% |
| Bellevue, ID | 2,430 | 50% | 3.1% |
| Lennox, SD | 2,432 | 58% | 20.1% |
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