| | North Potomac, MD | Mercersburg, PA | United States |
| Expend. per Student | $19,736 | $14,602 | $15,905 |
| Educ. Expend. per Student | $16,697 | $12,449 | $13,142 |
| Instr. Expend. per Student | $10,703 | $7,869 | $7,999 |
| Pupil/Teacher Ratio | 13.63 | 16.04 | 16.23 |
| Students per Librarian | 490 | 407 | 4573 |
| Students per Counselor | 292 | 396 | 530 |
| Grade School Educ. | 2.1% | 3.5% | 4.8% |
| Some High School Educ. | 1.5% | 7.5% | 6.3% |
| High School Educ. | 96.4% | 89.0% | 88.9% |
| Some College Educ. | 9.1% | 15.4% | 20.0% |
| 2 yr College Grad. | 4.2% | 5.8% | 8.7% |
| 4 yr College Grad. | 76.6% | 20.0% | 33.7% |
| Masters Grad. | 28.0% | 9.7% | 9.3% |
| Professional Degree | 4.2% | 1.1% | 2.2% |
| Doctorate Degree | 10.6% | 0.2% | 1.5% |