The central office for Regional School District 17 is located in the same building as Haddam-Killingworth High School. The office is responsible for five schools and more than 2,500 students, Pre-K through grade 12. The district enrolls students in Killingworth and Haddam. The central office is home to the Superintendent, Financial and Payroll offices, Information Technology, Health Services and Athletic Department.
The RSD 17 schools include Haddam-Killingworth High School, Haddam-Killingworth Middle School, Burr Elementary School, Haddam Elementary School and Killingworth Elementary School.