The school and district are named in honor of Tecumseh, a chief of the Shawnee people who lived in the general area between approximately 1768 and 1813.

[3][4][5] The school thereby serves residents of the city of New Carlisle, the village of Donnelsville, the unincorporated communities of Medway, Park Layne, and Crystal Lakes, plus adjacent rural land.

In 2007, as part of this project, the high school's old buildings, with the exception of the field house and auditorium, were demolished and replaced with new facilities.

In the fall of 1988 Aerospace Science was added to the curriculum in the form of Air Force Junior Reserve Office Training Corps.

He died in Kandahar, Afghanistan, of wounds suffered when enemy forces attacked his unit with an improvised explosive device.

[citation needed] From the fall 2012 season until the summer of 2014 Patrick Woods served as director of the marching band.