| | Onaka, SD | Seneca, SD | United States |
| Expend. per Student | $31,671 | $31,671 | $15,905 |
| Educ. Expend. per Student | $10,521 | $10,521 | $13,142 |
| Instr. Expend. per Student | $6,454 | $6,454 | $7,999 |
| Pupil/Teacher Ratio | 12.21 | 12.21 | 16.23 |
| Students per Librarian | 473 | 473 | 4573 |
| Students per Counselor | 383 | 383 | 530 |
| Grade School Educ. | 0.0% | 28.2% | 4.8% |
| Some High School Educ. | 0.0% | 0.0% | 6.3% |
| High School Educ. | 100.0% | 71.8% | 88.9% |
| Some College Educ. | 0.0% | 10.3% | 20.0% |
| 2 yr College Grad. | 27.3% | 17.9% | 8.7% |
| 4 yr College Grad. | 54.5% | 7.7% | 33.7% |
| Masters Grad. | 0.0% | 7.7% | 9.3% |
| Professional Degree | 0.0% | 0.0% | 2.2% |
| Doctorate Degree | 0.0% | 0.0% | 1.5% |