| | | | | | |
| Alexander High School | C | 1 | Southeast Ohio Regional (Marietta) | Alexander Local Schools | Athens | Public |
| Alexander Jr. High School | B | 1 | Southeast Ohio Regional (Marietta) | Alexander Local Schools | Athens | Public |
| Anna Middle School | B | 2 | Western Ohio Regional Tournament | Anna Local Schools | Shelby | Public |
| Anthony Wayne High School | C | 1 | BGSU Northwest Ohio Regional | Anthony Wayne Local School District | Lucas | Public |
| Arbor Hills Junior High | B | 1 | BGSU Northwest Ohio Regional | Sylvania Schools | Lucas | Public |
| Archbishop Alter High School | C | 1 | Western Ohio Regional Tournament | Arch Diocese of Cincinnati | Montgomery | Private |
| Aurora High School | C | 1 | Akron Regional Science Olympiad (Eastern) | Aurora City School District | Portage | Public |
| Beachwood High School | C | 1 | Northeast & Northern Ohio Regional Tournament | Beachwood City Schools | Cuyahoga | Public |
| Beachwood Middle School | B | 1 | Northeast & Northern Ohio Regional Tournament | Beachwood | OH | Public |
| Buckeye Jr. High | B | 1 | Northeast & Northern Ohio Regional Tournament | Buckeye Local School District | Medina | Public |
| Canal Winchester HS | C | 1 | Central Ohio Regional Tournament | Canal Winchester Local Schools | franklin | Public |
| Canal Winchester Middle School | B | 1 | Central Ohio Regional Tournament | Canal Winchester Local Schools | Franklin | Public |
| Centerville High School | C | 2 | Western Ohio Regional Tournament | Centerville City Schools | Montgomery | Public |
| Chardon High School | C | 1 | Northeast & Northern Ohio Regional Tournament | Chardon Local Schools | Geauga | Public |
| Chardon Middle School | B | 1 | Northeast & Northern Ohio Regional Tournament | Chardon Local Schools | Geauga | Public |
| Cincinnati Country Day School | C | 1 | Southwestern Ohio Science Olympiad | Independent | Hamilton | Private |
| Claggett Middle School | B | 1 | Northern Ohio Regional | Medina | Medina | Public |
| Copley High School | C | 1 | Akron Regional Science Olympiad (Eastern) | Copley-Fairlawn City Schools | Summit | Public |
| Copley Middle School | B | 1 | Akron Regional Science Olympiad (Eastern) | Copley-Fairlawn City Schools | Summit | Public |
| Dublin Coffman High School | C | 1 | Central Ohio Regional Tournament | Dublin City School District | Franklin | Public |
| Eastern Middle School | B | 1 | Southeast Ohio Regional (Marietta) | Eastern Local Schools | Meigs | Public |
| Fort Frye Middle School | B | 1 | Southeast Ohio Regional (Marietta) | Fort Frye | Washington | Public |
| Grandview Heights Larson MS | B | 1 | Central Ohio Regional Tournament | Grandview Heights | Franklin | Public |
| Granville High School | C | 1 | Central Ohio Regional Tournament | Granville Exempted Village School District | Licking | Public |
| Granville Middle School | B | 1 | Central Ohio Regional Tournament | Granville Exempted Village School District | Licking | Public |
| Hadley E Watts Middle School | B | 1 | Western Ohio Regional Tournament | Centerville City Schools | Montgomery | Public |
| Hawken School | C | 1 | Northeast & Northern Ohio Regional Tournament | Hawken School | Geauga | Private |
| Hudson High School | C | 1 | Akron Regional Science Olympiad (Eastern) | Hudson City Schools | Summit | Public |
| Hudson Middle School | B | 1 | Akron Regional Science Olympiad (Eastern) | Hudson City Schools | Summit | Public |
| Incarnate Word Academy | B | 1 | Northeast & Northern Ohio Regional Tournament | PARMA CSD | Cuyahoga | Private |
| Kenston High School | C | 2 | Northeast & Northern Ohio Regional Tournament | Kenston Local Schools | Geauga | Public |
| Kenston Middle School | B | 1 | Northeast & Northern Ohio Regional Tournament | Kenston Local Schools | Geauga | Public |
| Magsig Middle School | B | 1 | Western Ohio Regional Tournament | Centerville City Schools | Montgomery | Public |
| Mars Hill Academy | B | 1 | Westlake Science Olympiad | Mason City Schools | Warren | Private |
| Mason High School | C | 2 | Southwestern Ohio Science Olympiad | Mason City Schools | Warren | Public |
| Mason Middle School | B | 2 | Southwestern Ohio Science Olympiad | Mason City Schools | Warren | Public |
| Mayfield High School | C | 1 | Northeast & Northern Ohio Regional Tournament | Mayfield City Schools | Cuyahoga | Public |
| McCord Junior High | B | 1 | BGSU Northwest Ohio Regional | Sylvania Schools | Lucas | Public |
| Memorial Middle School | B | 1 | Northeast & Northern Ohio Regional Tournament | Mentor Public Schools | Lake | Public |
| Mentor High School | C | 1 | Northeast & Northern Ohio Regional Tournament | Mentor Public Schools | Lake | Public |
| Monroe Central | C | 1 | Southeast Ohio Regional (Marietta) | Switzerland of Ohio Local School District | Monroe | Public |
| New Albany High School | C | 1 | Central Ohio Regional Tournament | New Albany Plain Local School District | Franklin | Public |
| New Albany Middle School | B | 1 | Central Ohio Regional Tournament | New Albany Plain Local School District | Franklin | Public |
| New Philadelphia HS | C | 1 | Akron Regional Science Olympiad (Eastern) | New Philadelphia City Schools | Tuscarawas | Public |
| Nordonia Middle School | B | 1 | Akron Regional Science Olympiad (Eastern) | Nordonia Hills City School District | Summit | Public |
| Northmont High School | C | 1 | Western Ohio Regional Tournament | Northmont City Schools | Montgomery | Public |
| Northmont middle school | B | 2 | Western Ohio Regional Tournament | Northmont city schools | Montgomery | Public |
| Northview High School | C | 1 | BGSU Northwest Ohio Regional | Sylvania City Schools | Lucas | Public |
| Oak Harbor Senior High School | C | 1 | BGSU Northwest Ohio Regional | Benton Carroll Salem School District | Ottawa | Public |
| Olentangy Liberty High School | C | 1 | Central Ohio Regional Tournament | Olentangy Local Schools | Delaware | Public |
| Olentangy Orange High School | C | 1 | Central Ohio Regional Tournament | Olentangy Local Schools | Franklin | Public |
| Orrville Middle School | B | 1 | Akron Regional Science Olympiad (Eastern) | Orrville City Schools | Wayne | Public |
| Patterson Park Homeschoolers | B | 1 | Western Ohio Regional Tournament | Beavercreek City Schools | Greene | Home |
| Rocky River High School | C | 1 | Northeast & Northern Ohio Regional Tournament | Rocky River City School District | Cuyahoga | Public |
| Rocky River Middle School | B | 1 | Northern Ohio Regional | Rocky River City School District | Cuyahoga | Public |
| Seton Catholic | B | 1 | Akron Regional Science Olympiad (Eastern) | Diocese of Cleveland | Summit | Private |
| Shawnee High School | C | 1 | BGSU Northwest Ohio Regional | Shawnee Local Schools | Allen | Public |
| Solon High School | C | 2 | Northeast & Northern Ohio Regional Tournament | Solon City Schools | Cuyahoga | Public |
| Solon Middle School | B | 1 | Northeast & Northern Ohio Regional Tournament | Solon School District | United States | Public |
| Springfield High School | C | 1 | BGSU Northwest Ohio Regional | Springfield Local Schools (Lucas County) | Lucas | Public |
| Springfield Middle School | B | 2 | BGSU Northwest Ohio Regional | Springfield Local | Lucas | Public |
| St. Barnabas School | B | 1 | Akron Regional Science Olympiad (Eastern) | Diocese of Cleveland | Summit | Private |
| St. Charles Borromeo | B | 2 | Western Ohio Regional Tournament | Archdiocese of Cincinnati | Montgomery | Private |
| St. Edward High School | C | 1 | Northeast & Northern Ohio Regional Tournament | St. Edward High School | Cuyahoga | Private |
| St. Ignatius High School | C | 1 | Northeast & Northern Ohio Regional Tournament | Private1 | Cuyahoga | Private |
| St. Xavier High School | C | 1 | Southwestern Ohio Science Olympiad | St. Xavier High School | Hamilton | Private |
| Sycamore High School | C | 1 | Southwestern Ohio Science Olympiad | Sycamore Community School District | Hamilton | Public |
| Sylvania Southview High School | C | 1 | BGSU Northwest Ohio Regional | Sylvania City | Lucas | Public |
| The Seven Hills School | C | 1 | Southwestern Ohio Science Olympiad | Cincinnati Public (but it's a private school) | Hamilton | Private |
| Timberstone Junior High | B | 2 | BGSU Northwest Ohio Regional | Sylvania Schools | Lucas | Public |
| Tower Heights Middle School | B | 1 | Western Ohio Regional Tournament | Centerville City Schools | Montgomery | Public |
| Upper Arlington High School | C | 1 | Central Ohio Regional Tournament | Upper Arlington School District | Franklin | Public |
| Van Buren Middle School | B | 1 | BGSU Northwest Ohio Regional | Van Buren Local Schools | Hancock | Public |
| Warren High School | C | 1 | Southeast Ohio Regional (Marietta) | Warren Local School District | Washington | Public |
| Warren Middle School | B | 1 | Southeast Ohio Regional (Marietta) | Warren Local Schools | OH | Public |
| West Liberty Salem High School | C | 1 | Western Ohio Regional Tournament | West Liberty- Salem Local Schools | Champaign | Public |
| West Liberty-Salem Middle School | B | 1 | Western Ohio Regional Tournament | West Liberty-Salem Schools | Champaign | Public |
| Westlake City Schools | B | 2 | Northern Ohio Regional | Westlake City Schools | Cuyahoga | Public |
| Westlake HS | C | 2 | Northern Ohio Regional | Westlake City Schools | Cuyahoga | Public |
| Wyoming Middle School | B | 1 | Southwestern Ohio Science Olympiad | Wyoming City Schools | Hamilton County | Public |