| | Charleston, SC | Rio Vista, CA | United States |
| Expend. per Student | $18,933 | $13,968 | $15,905 |
| Educ. Expend. per Student | $12,188 | $11,346 | $13,142 |
| Instr. Expend. per Student | $6,530 | $6,685 | $7,999 |
| Pupil/Teacher Ratio | 12.91 | 23 | 16.23 |
| Students per Librarian | 505 | 6253 | 4573 |
| Students per Counselor | 284 | 867 | 530 |
| Grade School Educ. | 1.1% | 1.3% | 4.8% |
| Some High School Educ. | 3.1% | 4.6% | 6.3% |
| High School Educ. | 95.8% | 94.0% | 88.9% |
| Some College Educ. | 16.1% | 27.0% | 20.0% |
| 2 yr College Grad. | 7.3% | 13.1% | 8.7% |
| 4 yr College Grad. | 55.7% | 38.3% | 33.7% |
| Masters Grad. | 13.6% | 8.2% | 9.3% |
| Professional Degree | 4.8% | 3.1% | 2.2% |
| Doctorate Degree | 2.9% | 3.8% | 1.5% |