Old Saybrook Senior High School
| Name | Old Saybrook Senior High School |
| Grades | Class 08 to Class 12 |
| Address | 1111 Boston Post Rd. |
| City | Old Saybrook |
| School District | Old Saybrook School District |
| County | Middlesex County |
| Zipcode | 06475-4403 |
| Phone No. | (860)395-3175 |
| State | Connecticut |
| Suburb | Large |
| Students | 376 |
| Teachers | 40 |
| Student Teacher Ratio | 9.4 students per teacher |
| Charter School | No |
| Magnet School | No |
Old Saybrook Senior High School is located at 1111 Boston Post Rd. in Old Saybrook city of Middlesex County county in Connecticut. This school comes under Old Saybrook School District. You can call them at (860)395-3175 for more details. This is not a magnet school. Total three hundred seventy six students from class 08 to class 12 study in this school who are taught by forty teachers. This is not a charter school. The student teacher ratio of this school is 9.4.