| | St. Charles, IL | Winnetka, IL | United States |
| Expend. per Student | $17,588 | $21,907 | $15,905 |
| Educ. Expend. per Student | $15,271 | $18,508 | $13,142 |
| Instr. Expend. per Student | $8,985 | $11,567 | $7,999 |
| Pupil/Teacher Ratio | 14.42 | 13.97 | 16.23 |
| Students per Librarian | 1352 | 1480 | 4573 |
| Students per Counselor | 659 | 481 | 530 |
| Grade School Educ. | 2.1% | 0.0% | 4.8% |
| Some High School Educ. | 3.9% | 1.0% | 6.3% |
| High School Educ. | 94.1% | 99.0% | 88.9% |
| Some College Educ. | 19.1% | 4.4% | 20.0% |
| 2 yr College Grad. | 7.1% | 2.0% | 8.7% |
| 4 yr College Grad. | 50.9% | 90.4% | 33.7% |
| Masters Grad. | 16.7% | 32.6% | 9.3% |
| Professional Degree | 2.5% | 14.4% | 2.2% |
| Doctorate Degree | 1.9% | 3.5% | 1.5% |