Select School Beginning with "S"
| School | League | County |
|---|---|---|
| Salem | All-American Conference | Columbiana |
| Sandusky | Greater Buckeye Conference | Erie |
| Sandy Valley | Inter-Valley Conference | Stark |
| School For Creat & Perf Arts | Independents - Southwest | Hamilton |
| Sciotoville | Southern Ohio Conference | Scioto |
| Scott Allied Health Academy | Toledo City Athletic League | Lucas |
| Scott BTI Academy | Toledo City Athletic League | Lucas |
| Seneca East | Midland Athletic League | Seneca |
| Seton | Girls Greater Cincinnati League | Hamilton |
| Seven Hills | Miami Valley Conference | Hamilton |
| Shadyside | Ohio Valley Athletic Conference | Belmont |
| Shaker Heights | Lake Erie League | Cuyahoga |
| Shaw | Lake Erie League | Cuyahoga |
| Shawnee | Central Buckeye Conference | Clark |
| Shawnee | Western Buckeye League | Allen |
| Shelby | Northern Ohio League | Richland |
| Shenandoah | Ohio Valley Athletic Conference | Noble |
| Sheridan | Muskingum Valley League | Perry |
| Shroder Paideia | Southwest Ohio Public League | Hamilton |
| Sidney | Greater Western Ohio Conference | Shelby |
| Smithville | Wayne County Athletic League | Wayne |
| Solon | Northeast Ohio Conference | Cuyahoga |
| South | Columbus City League | Franklin |
| South | Premier Athletic Conference | Lake |
| South Central | Firelands Conference | Huron |
| South Gallia | Independents - Central, NW, SE | Gallia |
| South Point | Ohio Valley Conference | Lawrence |
| South Range | Inter Tri-County League | Mahoning |
| South Webster | Southern Ohio Conference | Scioto |
| Southeast | Portage Trail Conference | Portage |
| Southeastern | Ohio Heritage Conference | Clark |
| Southeastern | Scioto Valley Conference | Ross |
| Southern | Tri-Valley Conference | Meigs |
| Southern Local | Inter Tri-County League | Columbiana |
| Southview | Lake Erie League | Lorain |
| Spencerville | Northwest Conference | Allen |
| Spring Valley Academy | Montgomery | |
| Springboro | Greater Western Ohio Conference | Warren |
| Springfield | Inter Tri-County League | Mahoning |
| Springfield | Northern Lakes League | Lucas |
| Springfield | Portage Trail Conference | Summit |
| Springfield | Greater Western Ohio Conference | Clark |
| St Bernard-Elmwood Place | Miami Valley Conference | Hamilton |
| St Charles Preparatory | Central Catholic League | Franklin |
| St Clairsville | Ohio Valley Athletic Conference | Belmont |
| St Edward | Independents - Cleveland Catholic | Cuyahoga |
| St Francis DeSales | Central Catholic League | Franklin |
| St Francis DeSales | Toledo City Athletic League | Lucas |
| St Henry | Midwest Athletic Conference | Mercer |
| St Ignatius | Independents - Cleveland Catholic | Cuyahoga |
| St John | Midwest Athletic Conference | Allen |
| St John Central | Ohio Valley Athletic Conference | Belmont |
| St John's Jesuit | Toledo City Athletic League | Lucas |
| St Joseph | Midland Athletic League | Sandusky |
| St Joseph Academy | Independents - Cleveland Catholic | Cuyahoga |
| St Joseph Central | Independents - Central, NW, SE | Lawrence |
| St Martin De Porres | Independents - Cleveland Catholic | Cuyahoga |
| St Mary | Sandusky Bay Conference | Erie |
| St Peter | Independents - Central, NW, SE | Richland |
| St Peter Chanel | North Coast League | Cuyahoga |
| St Thomas Aquinas | Independents - Northeast Ohio | Stark |
| St Ursula Academy | Girls Greater Cincinnati League | Hamilton |
| St Ursula Academy | Toledo City Athletic League | Lucas |
| St Vincent St Mary | Independents - Cleveland Catholic | Summit |
| St Wendelin | Midland Athletic League | Seneca |
| St Xavier | Greater Catholic League | Hamilton |
| Start | Toledo City Athletic League | Lucas |
| Stebbins | Central Buckeye Conference | Montgomery |
| Stephen T Badin | Greater Catholic League | Butler |
| Steubenville | Ohio Valley Athletic Conference | Jefferson |
| Stivers School For The Arts | Southwest Ohio Public League | Montgomery |
| Stow-Munroe Falls | Northeast Ohio Conference | Summit |
| Strasburg-Franklin | Inter-Valley Conference | Tuscarawas |
| Streetsboro | Portage Trail Conference | Portage |
| Strongsville | Northeast Ohio Conference | Cuyahoga |
| Struthers | All-American Conference | Mahoning |
| Stryker | Buckeye Border Conference | Williams |
| Sts John & Paul-St John Campus | East Suburban Conference | Ashtabula |
| SuccessTech Academy | Cleveland Municipal SD | Cuyahoga |
| Summit Country Day | Miami Valley Conference | Hamilton |
| Swanton | Northwest Ohio Athletic League | Fulton |
| Sycamore | Greater Miami Conference | Hamilton |
| Sylvania Northview | Northern Lakes League | Lucas |
| Sylvania Southview | Northern Lakes League | Lucas |
| Symmes Valley | Southern Ohio Conference | Lawrence |