| | Groton, CT | Old Saybrook, CT | United States |
| Expend. per Student | $26,209 | $25,271 | $15,905 |
| Educ. Expend. per Student | $21,083 | $22,678 | $13,142 |
| Instr. Expend. per Student | $12,420 | $13,520 | $7,999 |
| Pupil/Teacher Ratio | 11.7 | 11.52 | 16.23 |
| Students per Librarian | 403 | 318 | 4573 |
| Students per Counselor | 331 | 315 | 530 |
| Grade School Educ. | 2.6% | 2.1% | 4.8% |
| Some High School Educ. | 3.4% | 2.4% | 6.3% |
| High School Educ. | 94.0% | 95.6% | 88.9% |
| Some College Educ. | 22.2% | 15.3% | 20.0% |
| 2 yr College Grad. | 8.2% | 8.7% | 8.7% |
| 4 yr College Grad. | 38.6% | 51.4% | 33.7% |
| Masters Grad. | 12.6% | 18.4% | 9.3% |
| Professional Degree | 2.5% | 4.0% | 2.2% |
| Doctorate Degree | 2.2% | 1.8% | 1.5% |