| Index | Harrisburg | South Dakota | National |
| Average Test Scores | 54% | 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 | Harrisburg | South Dakota | National |
| Completed 8th grade | 95.8% | 89.1% | 84.3% |
| Completed high school | 95.2% | 86.8% | 83.0% |
| Completed some college | 83.1% | 60.4% | 59.4% |
| Completed associate degree | 59.9% | 38.5% | 38.5% |
| Completed bachelors | 47.8% | 27.5% | 30.3% |
| Completed masters | 10.4% | 8.1% | 11.5% |
| Completed professional degree | 3.5% | 2.5% | 3.3% |
| Completed doctorate | 1.3% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Harrisburg. Using the proficiency score averages, the average test scores for Harrisburg, SD schools is 54%. The average student to teacher ratio is n/a. In Harrisburg, SD, an average of 95.8% of students have completed 8th grade and an average of 95.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Valley Springs, SD | 885 | 85% | 77.1% |
| Inwood, IA | 985 | 80% | 67.4% |
| Brandon, SD | 10,030 | 70% | 46.0% |
| Canton, SD | 3,499 | 60% | 25.0% |
| Lennox, SD | 2,432 | 58% | 20.1% |
| Harrisburg, SD | 6,420 | 54% | 13.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Crockett, TX | 6,424 | 29% | 39.1% |
| Kasson, MN | 6,425 | 62% | 29.5% |
| Monticello, NY | 6,429 | 37% | 24.0% |
| Bridge City, LA | 6,409 | 56% | 16.7% |
| Kingston, RI | 6,407 | 53% | 10.9% |
| Harrisburg, SD | 6,420 | 54% | 13.3% |
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