It was added to the National Register of Historic Places in 1993, and is now used as the Putnam Town Hall.

The present school was built in 1955 on Schoolhouse Drive off Woodstock Avenue and a new wing was added in 1970.

A second addition was completed in 1994 which houses the technical education department, CAD lab, weight room, and television studio.

Part of this renovation included an all new gymnasium, bullet proof windows, and a new modern look.

The Putnam High football team defeated Haddam-Killingworth 20-14 for the 1994 Class S Championship.