The OAC currently has 10 members. Notes 1. * Baldwin–Wallace left the OAC after the 1918-19 season, but re-joined in the 1923-24 season; only to leave again after the 1947-48 season, but re-joined again in the 1961-62 season. 2. * John Carroll left the OAC after the 1948-49 season, but re-joined in the 1989-90 season. 3. * Ohio Northern left the OAC after the 1948-49, but re-joined in the 1973-74 season.