| | Arlington, VA | Bel Air town (Harford County), MD | United States |
| Expend. per Student | $23,553 | $16,068 | $15,905 |
| Educ. Expend. per Student | $19,293 | $13,867 | $13,142 |
| Instr. Expend. per Student | $11,028 | $8,657 | $7,999 |
| Pupil/Teacher Ratio | 15.15 | 14.67 | 16.23 |
| Students per Librarian | 644 | 491 | 4573 |
| Students per Counselor | 248 | 366 | 530 |
| Grade School Educ. | 3.4% | 4.8% | 4.8% |
| Some High School Educ. | 1.7% | 2.8% | 6.3% |
| High School Educ. | 94.9% | 92.4% | 88.9% |
| Some College Educ. | 7.8% | 17.6% | 20.0% |
| 2 yr College Grad. | 3.4% | 11.3% | 8.7% |
| 4 yr College Grad. | 76.3% | 37.3% | 33.7% |
| Masters Grad. | 28.0% | 11.7% | 9.3% |
| Professional Degree | 8.3% | 0.7% | 2.2% |
| Doctorate Degree | 4.8% | 1.7% | 1.5% |