| | Rock Island, IL | Troy, AL | United States |
| Expend. per Student | $15,998 | $11,675 | $15,905 |
| Educ. Expend. per Student | $13,861 | $11,006 | $13,142 |
| Instr. Expend. per Student | $8,732 | $6,266 | $7,999 |
| Pupil/Teacher Ratio | 15.16 | 18.68 | 16.23 |
| Students per Librarian | 1282 | 427 | 4573 |
| Students per Counselor | 392 | 366 | 530 |
| Grade School Educ. | 4.8% | 1.9% | 4.8% |
| Some High School Educ. | 8.3% | 5.4% | 6.3% |
| High School Educ. | 86.9% | 92.7% | 88.9% |
| Some College Educ. | 27.0% | 23.3% | 20.0% |
| 2 yr College Grad. | 9.2% | 2.7% | 8.7% |
| 4 yr College Grad. | 21.9% | 38.3% | 33.7% |
| Masters Grad. | 5.8% | 10.3% | 9.3% |
| Professional Degree | 1.3% | 3.3% | 2.2% |
| Doctorate Degree | 1.1% | 2.9% | 1.5% |