| | Rockville Centre, NY | Washington, DC | United States |
| Expend. per Student | $31,321 | $30,279 | $15,905 |
| Educ. Expend. per Student | $27,824 | $23,069 | $13,142 |
| Instr. Expend. per Student | $18,368 | $11,354 | $7,999 |
| Pupil/Teacher Ratio | 12.06 | 11.65 | 16.23 |
| Students per Librarian | 979 | 796 | 4573 |
| Students per Counselor | 358 | 445 | 530 |
| Grade School Educ. | 2.3% | 3.2% | 4.8% |
| Some High School Educ. | 3.1% | 4.5% | 6.3% |
| High School Educ. | 94.6% | 92.2% | 88.9% |
| Some College Educ. | 10.6% | 12.4% | 20.0% |
| 2 yr College Grad. | 8.0% | 3.0% | 8.7% |
| 4 yr College Grad. | 62.3% | 61.4% | 33.7% |
| Masters Grad. | 22.1% | 21.9% | 9.3% |
| Professional Degree | 6.8% | 9.7% | 2.2% |
| Doctorate Degree | 1.5% | 4.3% | 1.5% |