| Index | Mercersville | Maryland | National |
| Average Test Scores | n/a | 40% | 48% |
| Student/Teacher ratio | n/a | 16:1 | 16:1 |
| Total public schools | n/a | 1,163 | 79,221 |
| Total private schools | n/a | 674 | 24,874 |
| Total post-secondary schools | n/a | 112 | 7,963 |
| Index | Mercersville | Maryland | National |
| Completed 8th grade | 66.2% | 87.5% | 84.3% |
| Completed high school | 66.2% | 86.5% | 83.0% |
| Completed some college | 36.5% | 64.2% | 59.4% |
| Completed associate degree | 24.3% | 44.8% | 38.5% |
| Completed bachelors | 24.3% | 38.4% | 30.3% |
| Completed masters | 24.3% | 17.7% | 11.5% |
| Completed professional degree | 12.2% | 5.5% | 3.3% |
| Completed doctorate | 0.0% | 2.5% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Mercersville. Using the proficiency score averages, the average test scores for Mercersville, MD schools is n/a. The average student to teacher ratio is n/a. In Mercersville, MD, an average of 66.2% of students have completed 8th grade and an average of 66.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Middletown, MD | 4,694 | 69% | 44.4% |
| Boonsboro, MD | 3,594 | 60% | 25.5% |
| Jefferson, MD | 2,577 | 58% | 20.8% |
| Myersville, MD | 2,225 | 57% | 18.8% |
| Smithsburg, MD | 2,977 | 55% | 14.6% |
| Mercersville, MD | 188 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Milroy, MN | 188 | 50% | 4.2% |
| Nikolaevsk, AK | 188 | 35% | 27.1% |
| Golden, MS | 188 | 52% | 8.3% |
| Gilliam, MO | 188 | 30% | 37.5% |
| Weldona, CO | 188 | 24% | 50.5% |
| Mercersville, MD | 188 | n/a |
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