| | Wilmington, DE | Petaluma, CA | United States |
| Expend. per Student | $19,973 | $16,850 | $15,905 |
| Educ. Expend. per Student | $17,388 | $13,921 | $13,142 |
| Instr. Expend. per Student | $9,785 | $8,508 | $7,999 |
| Pupil/Teacher Ratio | 14.09 | 20.82 | 16.23 |
| Students per Librarian | 1104 | 14240 | 4573 |
| Students per Counselor | 329 | 399 | 530 |
| Grade School Educ. | 3.1% | 4.6% | 4.8% |
| Some High School Educ. | 7.9% | 4.8% | 6.3% |
| High School Educ. | 89.0% | 90.5% | 88.9% |
| Some College Educ. | 16.0% | 24.2% | 20.0% |
| 2 yr College Grad. | 6.1% | 9.4% | 8.7% |
| 4 yr College Grad. | 30.6% | 40.3% | 33.7% |
| Masters Grad. | 8.7% | 9.9% | 9.3% |
| Professional Degree | 3.0% | 3.4% | 2.2% |
| Doctorate Degree | 1.9% | 1.4% | 1.5% |