| | Marlborough, CT | Old Saybrook, CT | United States |
| Expend. per Student | $25,069 | $25,271 | $15,905 |
| Educ. Expend. per Student | $20,830 | $22,678 | $13,142 |
| Instr. Expend. per Student | $12,433 | $13,520 | $7,999 |
| Pupil/Teacher Ratio | 12.33 | 11.52 | 16.23 |
| Students per Librarian | 479 | 318 | 4573 |
| Students per Counselor | 341 | 315 | 530 |
| Grade School Educ. | 2.0% | 2.1% | 4.8% |
| Some High School Educ. | 1.4% | 2.4% | 6.3% |
| High School Educ. | 96.7% | 95.6% | 88.9% |
| Some College Educ. | 20.5% | 15.3% | 20.0% |
| 2 yr College Grad. | 7.1% | 8.7% | 8.7% |
| 4 yr College Grad. | 50.7% | 51.4% | 33.7% |
| Masters Grad. | 17.2% | 18.4% | 9.3% |
| Professional Degree | 3.4% | 4.0% | 2.2% |
| Doctorate Degree | 0.9% | 1.8% | 1.5% |