| Index | Mount Gretna | 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 | Mount Gretna | Pennsylvania | National |
| Completed 8th grade | 99.1% | 86.9% | 84.3% |
| Completed high school | 99.1% | 85.6% | 83.0% |
| Completed some college | 91.2% | 53.6% | 59.4% |
| Completed associate degree | 83.8% | 37.4% | 38.5% |
| Completed bachelors | 81.5% | 29.3% | 30.3% |
| Completed masters | 55.6% | 11.5% | 11.5% |
| Completed professional degree | 41.2% | 3.3% | 3.3% |
| Completed doctorate | 17.6% | 1.4% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Mount Gretna. Using the proficiency score averages, the average test scores for Mount Gretna, PA schools is n/a. The average student to teacher ratio is n/a. In Mount Gretna, PA, an average of 99.1% of students have completed 8th grade and an average of 99.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Bainbridge, PA | 1,399 | 84% | 75.0% |
| York Haven, PA | 819 | 77% | 60.4% |
| Hershey, PA | 14,941 | 76% | 57.7% |
| Palmyra, PA | 7,541 | 75% | 56.6% |
| Manchester, PA | 2,680 | 72% | 49.2% |
| Mount Gretna, PA | 165 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Deer Creek, OK | 165 | 47% | 2.1% |
| Hyannis, NE | 165 | 65% | 35.4% |
| Akhiok, AK | 164 | 50% | 4.2% |
| Seldovia, AK | 164 | 50% | 4.2% |
| Iola, TX | 164 | 57% | 18.8% |
| Mount Gretna, PA | 165 | n/a |
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