| Index | Charlton | 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 | Charlton | Maryland | National |
| Completed 8th grade | 100.0% | 87.5% | 84.3% |
| Completed high school | 100.0% | 86.5% | 83.0% |
| Completed some college | 85.9% | 64.2% | 59.4% |
| Completed associate degree | 51.1% | 44.8% | 38.5% |
| Completed bachelors | 43.5% | 38.4% | 30.3% |
| Completed masters | 35.9% | 17.7% | 11.5% |
| Completed professional degree | 15.2% | 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 Charlton. Using the proficiency score averages, the average test scores for Charlton, MD schools is n/a. The average student to teacher ratio is n/a. In Charlton, MD, an average of 100.0% of students have completed 8th grade and an average of 100.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Greencastle, PA | 4,008 | 69% | 44.4% |
| Mercersburg, PA | 1,673 | 62% | 29.0% |
| Boonsboro, MD | 3,594 | 60% | 25.5% |
| Clear Spring, MD | 486 | 55% | 13.9% |
| Hagerstown, MD | 40,027 | 44% | 8.8% |
| Charlton, MD | 380 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Dublin, NC | 380 | 22% | 54.2% |
| Converse, LA | 380 | 70% | 45.8% |
| Gary City, TX | 380 | 51% | 5.2% |
| Onekama, MI | 380 | 40% | 17.7% |
| Odell, NE | 379 | 75% | 56.3% |
| Charlton, MD | 380 | n/a |
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