[1] The Old Athol High School is listed on the National Register of Historic Places.
In the 1890s, construction of a new high school began and additions and expansions continued with a new main building constructed in 1937 in an art deco style.
It was converted to a junior high school in 1957, closed in 2003, and is now a senior living center.
[3] Athol High School competes in the Pioneer Valley Interscholastic Athletic Conference.
It maintains a rivalry with Ralph C. Mahar Regional High School.