Tecumseh High School is a public high school near New Carlisle, Ohio. The school and district are named in honor of Tecumseh, the Shawnee Indian chief and warrior who lived in the general area between approximately 1768 and 1813.Tecumseh is the only high school in the Tecumseh Local Schools district (renamed from New Carlisle-Bethel Local Schools in 1989). The district encompasses Bethel Township of Clark County and part of the eastern side of Bethel Township of Miami County.