| | Marietta, GA | Decatur, GA | United States |
| Expend. per Student | $13,877 | $14,356 | $15,905 |
| Educ. Expend. per Student | $11,675 | $13,120 | $13,142 |
| Instr. Expend. per Student | $7,686 | $8,024 | $7,999 |
| Pupil/Teacher Ratio | 14.47 | 13.85 | 16.23 |
| Students per Librarian | 537 | 566 | 4573 |
| Students per Counselor | 376 | 315 | 530 |
| Grade School Educ. | 5.9% | 0.8% | 4.8% |
| Some High School Educ. | 3.8% | 3.4% | 6.3% |
| High School Educ. | 90.4% | 95.9% | 88.9% |
| Some College Educ. | 19.3% | 8.3% | 20.0% |
| 2 yr College Grad. | 7.1% | 3.9% | 8.7% |
| 4 yr College Grad. | 45.2% | 74.6% | 33.7% |
| Masters Grad. | 11.3% | 23.4% | 9.3% |
| Professional Degree | 2.8% | 11.2% | 2.2% |
| Doctorate Degree | 1.2% | 8.5% | 1.5% |