| | Duncan, SC | United States, SC |
| Expend. per Student | $14,538 | $15,905 |
| Educ. Expend. per Student | $11,521 | $13,142 |
| Instr. Expend. per Student | $6,677 | $7,999 |
| Pupil/Teacher Ratio | 13.74 | 16.23 |
| Students per Librarian | 424 | 4573 |
| Students per Counselor | 375 | 530 |
| Grade School Educ. | 6.7% | 4.8% |
| Some High School Educ. | 9.0% | 6.3% |
| High School Educ. | 84.3% | 88.9% |
| Some College Educ. | 23.1% | 20.0% |
| 2 yr College Grad. | 5.6% | 8.7% |
| 4 yr College Grad. | 29.3% | 33.7% |
| Masters Grad. | 4.9% | 9.3% |
| Professional Degree | 0.0% | 2.2% |
| Doctorate Degree | 0.0% | 1.5% |