| | Potomac, MD | Des Moines, IA | United States |
| Expend. per Student | $19,736 | $14,293 | $15,905 |
| Educ. Expend. per Student | $16,697 | $11,894 | $13,142 |
| Instr. Expend. per Student | $10,703 | $7,373 | $7,999 |
| Pupil/Teacher Ratio | 13.63 | 15.53 | 16.23 |
| Students per Librarian | 490 | 799 | 4573 |
| Students per Counselor | 292 | 362 | 530 |
| Grade School Educ. | 1.2% | 6.5% | 4.8% |
| Some High School Educ. | 1.3% | 6.4% | 6.3% |
| High School Educ. | 97.5% | 87.1% | 88.9% |
| Some College Educ. | 7.1% | 20.2% | 20.0% |
| 2 yr College Grad. | 2.5% | 9.2% | 8.7% |
| 4 yr College Grad. | 83.8% | 28.1% | 33.7% |
| Masters Grad. | 27.6% | 6.2% | 9.3% |
| Professional Degree | 14.9% | 1.8% | 2.2% |
| Doctorate Degree | 11.5% | 0.8% | 1.5% |