| Index | Harmonsburg | Pennsylvania | National |
| Average Test Scores | n/a | 55% | 48% |
| Student/Teacher ratio | n/a | 16:1 | 16:1 |
| Total public schools | n/a | 2,563 | 79,221 |
| Total private schools | n/a | 1,626 | 24,874 |
| Total post-secondary schools | n/a | 406 | 7,963 |

| Index | Harmonsburg | Pennsylvania | National |
| Completed 8th grade | 86.3% | 86.9% | 84.3% |
| Completed high school | 86.3% | 85.6% | 83.0% |
| Completed some college | 59.0% | 53.6% | 59.4% |
| Completed associate degree | 56.5% | 37.4% | 38.5% |
| Completed bachelors | 36.6% | 29.3% | 30.3% |
| Completed masters | 15.5% | 11.5% | 11.5% |
| Completed professional degree | 12.4% | 3.3% | 3.3% |
| Completed doctorate | 12.4% | 1.4% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Harmonsburg. Using the proficiency score averages, the average test scores for Harmonsburg, PA schools is n/a. The average student to teacher ratio is n/a. In Harmonsburg, PA, an average of 86.3% of students have completed 8th grade and an average of 86.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Edinboro, PA | 5,772 | 67% | 38.5% |
| Andover, OH | 563 | 62% | 28.8% |
| Linesville, PA | 1,142 | 60% | 24.0% |
| Conneautville, PA | 794 | 58% | 20.3% |
| Cochranton, PA | 1,059 | 57% | 18.8% |
| Harmonsburg, PA | 379 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Colton, WA | 379 | 60% | 24.0% |
| Jeffersonville, NY | 379 | 49% | 1.0% |
| Barrett, MN | 379 | 63% | 30.7% |
| Calamus, IA | 378 | 70% | 44.8% |
| Nehalem, OR | 380 | 45% | 7.3% |
| Harmonsburg, PA | 379 | n/a |