| Index | Harrison | 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 | Harrison | South Dakota | National |
| Completed 8th grade | 100.0% | 89.1% | 84.3% |
| Completed high school | 97.0% | 86.8% | 83.0% |
| Completed some college | 65.2% | 60.4% | 59.4% |
| Completed associate degree | 36.4% | 38.5% | 38.5% |
| Completed bachelors | 36.4% | 27.5% | 30.3% |
| Completed masters | 12.1% | 8.1% | 11.5% |
| Completed professional degree | 12.1% | 2.5% | 3.3% |
| Completed doctorate | 12.1% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Harrison. Using the proficiency score averages, the average test scores for Harrison, SD schools is n/a. The average student to teacher ratio is n/a. In Harrison, SD, an average of 100.0% of students have completed 8th grade and an average of 97.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Stickney, SD | 265 | 70% | 44.8% |
| Corsica, SD | 729 | 60% | 25.0% |
| Armour, SD | 653 | 52% | 7.6% |
| Harrison, SD | 7 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Wide Ruins, AZ | 6 | 10% | 79.2% |
| Platinum, AK | 8 | 50% | 4.2% |
| Wetonka, SD | 5 | 50% | 4.2% |
| San Antonio, NM | 9 | 25% | 47.9% |
| Carlton Landing, OK | 5 | 15% | 68.8% |
| Harrison, SD | 7 | n/a |
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