| | Old Lyme, CT | Lyme, CT | United States |
| Expend. per Student | $26,209 | $26,209 | $15,905 |
| Educ. Expend. per Student | $21,083 | $21,083 | $13,142 |
| Instr. Expend. per Student | $12,420 | $12,420 | $7,999 |
| Pupil/Teacher Ratio | 11.7 | 11.7 | 16.23 |
| Students per Librarian | 403 | 403 | 4573 |
| Students per Counselor | 331 | 331 | 530 |
| Grade School Educ. | 1.9% | 0.4% | 4.8% |
| Some High School Educ. | 2.4% | 1.2% | 6.3% |
| High School Educ. | 95.6% | 98.5% | 88.9% |
| Some College Educ. | 15.4% | 20.2% | 20.0% |
| 2 yr College Grad. | 8.6% | 8.3% | 8.7% |
| 4 yr College Grad. | 53.7% | 54.8% | 33.7% |
| Masters Grad. | 18.4% | 17.2% | 9.3% |
| Professional Degree | 5.2% | 4.9% | 2.2% |
| Doctorate Degree | 3.6% | 4.0% | 1.5% |