Killingly High School
| Name | Killingly High School |
| Grades | Class 09 to Class 12 |
| Address | 226 Putman Pike |
| City | Dayville |
| School District | Killingly School District |
| County | Windham County |
| Zipcode | 06241 |
| Phone No. | (860)779-6620 |
| State | Connecticut |
| Rural | Fringe |
| Students | 744 |
| Teachers | 67 |
| Student Teacher Ratio | 11.1 students per teacher |
| Charter School | No |
| Magnet School | No |
Killingly High School is located at 226 Putman Pike in Dayville city of Windham County county in Connecticut. This school comes under Killingly School District. You can call them at (860)779-6620 for more details. This is not a magnet school. Total seven hundred forty four students from class 09 to class 12 study in this school who are taught by sixty seven teachers. This is not a charter school. The student teacher ratio of this school is 11.1.