| | Charter Oak, IA | United States, IA |
| Expend. per Student | $12,823 | $15,905 |
| Educ. Expend. per Student | $10,875 | $13,142 |
| Instr. Expend. per Student | $6,747 | $7,999 |
| Pupil/Teacher Ratio | 14.67 | 16.23 |
| Students per Librarian | 2175 | 4573 |
| Students per Counselor | 378 | 530 |
| Grade School Educ. | 2.4% | 4.8% |
| Some High School Educ. | 5.9% | 6.3% |
| High School Educ. | 91.6% | 88.9% |
| Some College Educ. | 24.6% | 20.0% |
| 2 yr College Grad. | 10.3% | 8.7% |
| 4 yr College Grad. | 5.7% | 33.7% |
| Masters Grad. | 1.9% | 9.3% |
| Professional Degree | 1.1% | 2.2% |
| Doctorate Degree | 0.0% | 1.5% |