Haddam-Killingworth Middle School
| Name | Haddam-Killingworth Middle School |
| Grades | Class 06 to Class 08 |
| Address | 451 Route 81 |
| City | Killingworth |
| School District | Regional School District 17 |
| County | Middlesex County |
| Zipcode | 06419 |
| Phone No. | (860)663-1241 |
| State | Connecticut |
| Rural | Fringe |
| Students | 433 |
| Teachers | 34 |
| Student Teacher Ratio | 12.7 students per teacher |
| Charter School | No |
| Magnet School | No |
Haddam-Killingworth Middle School is located at 451 Route 81 in Killingworth city of Middlesex County county in Connecticut. This school comes under Regional School District 17. You can call them at (860)663-1241 for more details. This is not a magnet school. Total four hundred thirty three students from class 06 to class 08 study in this school who are taught by thirty four teachers. This is not a charter school. The student teacher ratio of this school is 12.7.