| | Plainfield, IL | DeKalb, IL | United States |
| Expend. per Student | $18,169 | $16,963 | $15,905 |
| Educ. Expend. per Student | $16,222 | $14,985 | $13,142 |
| Instr. Expend. per Student | $9,784 | $8,982 | $7,999 |
| Pupil/Teacher Ratio | 14.41 | 13.35 | 16.23 |
| Students per Librarian | 1491 | 2379 | 4573 |
| Students per Counselor | 776 | 537 | 530 |
| Grade School Educ. | 1.8% | 4.3% | 4.8% |
| Some High School Educ. | 1.9% | 5.0% | 6.3% |
| High School Educ. | 96.3% | 90.6% | 88.9% |
| Some College Educ. | 16.2% | 21.8% | 20.0% |
| 2 yr College Grad. | 8.4% | 9.7% | 8.7% |
| 4 yr College Grad. | 55.5% | 35.6% | 33.7% |
| Masters Grad. | 15.3% | 11.0% | 9.3% |
| Professional Degree | 2.6% | 2.0% | 2.2% |
| Doctorate Degree | 1.9% | 1.9% | 1.5% |