| | Arlington, VA | Milford Mill, MD | United States |
| Expend. per Student | $23,553 | $16,935 | $15,905 |
| Educ. Expend. per Student | $19,293 | $14,996 | $13,142 |
| Instr. Expend. per Student | $11,028 | $9,409 | $7,999 |
| Pupil/Teacher Ratio | 15.15 | 14.46 | 16.23 |
| Students per Librarian | 644 | 633 | 4573 |
| Students per Counselor | 248 | 312 | 530 |
| Grade School Educ. | 3.4% | 3.6% | 4.8% |
| Some High School Educ. | 1.7% | 6.1% | 6.3% |
| High School Educ. | 94.9% | 90.3% | 88.9% |
| Some College Educ. | 7.8% | 25.0% | 20.0% |
| 2 yr College Grad. | 3.4% | 10.6% | 8.7% |
| 4 yr College Grad. | 76.3% | 30.1% | 33.7% |
| Masters Grad. | 28.0% | 8.4% | 9.3% |
| Professional Degree | 8.3% | 1.6% | 2.2% |
| Doctorate Degree | 4.8% | 1.3% | 1.5% |