| | Centreville, VA | Johnston, IA | United States |
| Expend. per Student | $17,573 | $14,293 | $15,905 |
| Educ. Expend. per Student | $16,085 | $11,894 | $13,142 |
| Instr. Expend. per Student | $10,083 | $7,373 | $7,999 |
| Pupil/Teacher Ratio | 13.52 | 15.53 | 16.23 |
| Students per Librarian | 671 | 799 | 4573 |
| Students per Counselor | 273 | 362 | 530 |
| Grade School Educ. | 2.9% | 0.4% | 4.8% |
| Some High School Educ. | 2.3% | 1.7% | 6.3% |
| High School Educ. | 94.8% | 97.9% | 88.9% |
| Some College Educ. | 14.0% | 16.1% | 20.0% |
| 2 yr College Grad. | 6.4% | 10.3% | 8.7% |
| 4 yr College Grad. | 58.0% | 54.6% | 33.7% |
| Masters Grad. | 19.1% | 13.9% | 9.3% |
| Professional Degree | 2.6% | 2.9% | 2.2% |
| Doctorate Degree | 2.4% | 2.2% | 1.5% |