The Administrative Office of Regional School District 13 is located adjacent to Coginchaug Regional High School, which includes the Superintendent of Schools.
Regional School District 13 is made up of six schools in Middlefield (2) and Durham (4) with students in grades K through 12. The district was created in 1969, and presently more than 2,000 students are enrolled.
Schools: Brewster Elementary School, Francis E. Korn Elementary School, John Lyman Elementary School, Memorial Middle School, Frank Ward Strong Middle School and Coginchaug Regional High School.