Black River High School is a public high school located in Sullivan, Ohio. It was consolidated in 1961 by combining the districts from Homerville, Spencer, and Sullivan.
Black River's school colors are black and gold. The mascot is the pirate. The school fight song is "Across The Field". The school is a member of the Patriot Athletic Conference (PAC-12). Black River had previously been a member of the Firelands Conference from 1964-1993 and the Mohican Area Conference from 1993-2004.
Patriot Athletic Conference championships
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Mohican Area Conference championships
- Softball - 1999
- Football - 1999
- Football - 2002*
Firelands Conference championships
- Football - 1977, 1984*, 1985*, 1986, 1989, 1990*, 1992*
- Volleyball - 1978
- Boys Basketball - 1964-65*
- Softball - 1988, 1989
- Boys Track & Field - 1985
- Girls Track & Field - 1990
- Cross Country - 1987
- Baseball - 1993
Shared titles are denoted with an asterisk (*).