| | Rockville, SC | Washington, DC | United States |
| Expend. per Student | $18,933 | $30,279 | $15,905 |
| Educ. Expend. per Student | $12,188 | $23,069 | $13,142 |
| Instr. Expend. per Student | $6,530 | $11,354 | $7,999 |
| Pupil/Teacher Ratio | 12.91 | 11.65 | 16.23 |
| Students per Librarian | 505 | 796 | 4573 |
| Students per Counselor | 284 | 445 | 530 |
| Grade School Educ. | 0.0% | 3.2% | 4.8% |
| Some High School Educ. | 0.0% | 4.5% | 6.3% |
| High School Educ. | 100.0% | 92.2% | 88.9% |
| Some College Educ. | 25.8% | 12.4% | 20.0% |
| 2 yr College Grad. | 6.2% | 3.0% | 8.7% |
| 4 yr College Grad. | 55.7% | 61.4% | 33.7% |
| Masters Grad. | 7.2% | 21.9% | 9.3% |
| Professional Degree | 7.2% | 9.7% | 2.2% |
| Doctorate Degree | 0.0% | 4.3% | 1.5% |