Lyme-Old Lyme High School
| Name | Lyme-Old Lyme High School |
| Grades | Class 09 to Class 12 |
| Address | 69 Lyme St. |
| City | Old Lyme |
| School District | Regional School District 18 |
| County | New London County |
| Zipcode | 06371-2335 |
| Phone No. | (860)434-1651 |
| State | Connecticut |
| Rural | Fringe |
| Students | 450 |
| Teachers | 43 |
| Student Teacher Ratio | 10.5 students per teacher |
| Charter School | No |
| Magnet School | No |
Lyme-Old Lyme High School is located at 69 Lyme St. in Old Lyme city of New London County county in Connecticut. This school comes under Regional School District 18. You can call them at (860)434-1651 for more details. This is not a magnet school. Total four hundred fifty students from class 09 to class 12 study in this school who are taught by forty three teachers. This is not a charter school. The student teacher ratio of this school is 10.5.