| | Portsmouth, NH | Rockville, MD | United States |
| Expend. per Student | $22,056 | $19,736 | $15,905 |
| Educ. Expend. per Student | $19,034 | $16,697 | $13,142 |
| Instr. Expend. per Student | $12,039 | $10,703 | $7,999 |
| Pupil/Teacher Ratio | 11.7 | 13.63 | 16.23 |
| Students per Librarian | 333 | 490 | 4573 |
| Students per Counselor | 210 | 292 | 530 |
| Grade School Educ. | 1.0% | 3.8% | 4.8% |
| Some High School Educ. | 1.8% | 3.7% | 6.3% |
| High School Educ. | 97.2% | 92.5% | 88.9% |
| Some College Educ. | 12.6% | 12.6% | 20.0% |
| 2 yr College Grad. | 5.7% | 4.6% | 8.7% |
| 4 yr College Grad. | 62.8% | 65.3% | 33.7% |
| Masters Grad. | 17.9% | 22.4% | 9.3% |
| Professional Degree | 2.9% | 5.7% | 2.2% |
| Doctorate Degree | 2.5% | 9.2% | 1.5% |