Seneca County League
The Seneca County League was an Ohio high school athletic league located in northwest Ohio that ended in the fall of 1985. Schools in the league at the time were Seneca East High School, Old Fort High School, Bettsville High School, Hopewell-Loudon High School, and New Riegel High School.- Attica High School
- Bettsville High School
- Bloomville High School
- Hopewell-Loudon High School
- Jackson-Liberty High School
- Melmore High School
- New Riegel High School
- Old Fort High School
- Republic High School
- Thompson High School
