1962
Fitzwilliam, Sullivan, Roxbury, Swanzey, Richmond, Troy, Gilsum and Surry form the Monadnock Regional School District under Supervisory Union #38
1967
Hinsdale and Winchester join Supervisory Union #38
Supervisory Union #38: Fitzwilliam, Sullivan, Roxbury, Swanzey, Richmond, Troy, Gilsum, and Surry as the Monadnock Regional School District, Hinsdale and Winchester
2008
Surry leaves School Administrative Unit #38/Monadnock Regional School District
2011
Hinsdale and Winchester leave School Administrative Unit #38, and School Administrative Unit #93 is formed as a single-district SAU (Monadnock Regional School District): Gilsum, Richmond, Swanzey, Troy, Fitzwilliam, Roxbury and Sullivan
2013
Sullivan leaves School Administrative Unit #93/Monadnock Regional School District
Original Buildings
- Troy Elementary School – 1895
- Emerson Elementary School – 1925
- Cutler Elementary School – 1945
- Mt. Caesar Elementary School – 1953
- Gilsum STEAM Academy – 1956
- Monadnock Regional Middle High School -1962