| Abingdon-Avon High School | Abingdon | Hopewell |
| Altamont High School | Altamont | Eastern |
| Alton Senior High School | Alton | Kaskaskia |
| Argo Community High School | Summit | Northeast |
| Armstrong High School | Armstrong | Kickapoo |
| Belleville West High School | Belleville | Kaskaskia |
| Benton High School | Benton | Little Egypt |
| Blue Ridge High School | Farmer City | Cenois |
| Brown County High School | Mt. Sterling | Illinois Valley |
| Brownstown High School | Brownstown | Eastern |
| Byron High School | Byron | Northwest |
| Capital Area Career Center | Springfield | Cenois |
| Carbondale High School | Carbondale | Little Egypt |
| Carlyle High School | Carlyle | Kaskaskia |
| Carmi-White County High School | Carmi | Little Egypt |
| Carrier Mills-Stonefort High School | Carrier Mills | Little Egypt |
| Carterville High School | Carterville | Little Egypt |
| Champaign Central High School | Champaign | Kickapoo |
| Chester High School | Chester | Little Egypt |
| Civic Memorial High School | Bethalto | Kaskaskia |
| Clifton Central High School | Clifton | Prairie 8 |
| Cobden High School | Cobden | Little Egypt |
| Collinsville High School | Collinsville | Kaskaskia |
| Columbia High School | Columbia | Kaskaskia |
| Cumberland High School | Toledo | Eastern |
| Dakota High School | Dakota | Northwest |
| Danville High School | Danville | Kickapoo |
| Deer Creek-Mackinaw High School | Mackinaw | Hopewell |
| DeKalb High School | DeKalb | North Central |
| Delavan High School | Delavan | Hopewell |
| Donovan High School | Donovan | Prairie 8 |
| Dupo High School | Dupo | Kaskaskia |
| Dwight High School | Dwight | Prairie 8 |
| East Alton-Wood River High School | Wood River | Kaskaskia |
| Eisenhower High School | Blue Island | Northeast |
| Eldorado High School | Eldorado | Little Egypt |
| Elmwood High School | Elmwood | Hopewell |
| Elmwood Park High School | Elmwood Park | Northeast |
| Elverado High School | Elkville | Little Egypt |
| Fairfield Community High School | Fairfield | Eastern |
| Fenton High School | Bensenville | Northeast |
| Fieldcrest High School | Minonk | Hopewell |
| Freeburg High School | Freeburg | Kaskaskia |
| Geneseo High School | Geneseo | Blackhawk |
| Gillespie High School | Gillespie | Kaskaskia |
| Glenbrook North High School | Northbrook | Northeast |
| Glenwood High School | Chatham | Cenois |
| Granite City High School | Granite City | Kaskaskia |
| Hamilton County High School | McLeansboro | Little Egypt |
| Heritage High School | Broadlands | Kickapoo |
| Herrin High School | Herrin | Little Egypt |
| Herscher High School | Herscher | Prairie 8 |
| Highland High School | Highland | Kaskaskia |
| Hillcrest High School | Country Club Hills | Northeast |
| Homewood-Flossmoor High School | Flossmoor | Northeast |
| Hononegah High School | Rockton | North Central |
| Hoopeston Area High School | Hoopeston | Kickapoo |
| Huntley High School | Huntley | North Central |
| Illini Bluffs High School | Glasford | Hopewell |
| Illinois School for the Visually Impaired | Jacksonville | Illinois Valley |
| Illinois Valley Central High School | Chillicothe | Hopewell |
| John Hancock College Prep | Chicago | Chicago |
| Johnston City High School | Johnston City | Little Egypt |
| Joliet Catholic Academy | Joliet | Prairie 8 |
| Joppa-Maple Grove High School | Joppa | Little Egypt |
| Kewanee High School | Kewanee | Blackhawk |
| Lake Park High School | Roselle | Northeast |
| Larkin High School | Elgin | North Central |
| Lincolnwood High School | Raymond | Cenois |
| Lyons Township High School | LaGrange | Northeast |
| Macomb High School | Macomb | Illinois Valley |
| Mahomet-Seymour High School | Mahomet | Kickapoo |
| Marion High School | Marion | Little Egypt |
| Marquette Catholic High School | Alton | Kaskaskia |
| Mascoutah High School | Mascoutah | Kaskaskia |
| Mattoon High School | Mattoon | Eastern |
| Meredosia-Chambersburg High School | Meredosia | Illinois Valley |
| Midland High School | Varna | Hopewell |
| Midwest Central High School | Manito | Hopewell |
| Monmouth-Roseville High School | Monmouth | Blackhawk |
| Morris Community High School | Morris | Prairie 8 |
| Mt. Pulaski High School | Mt. Pulaski | Cenois |
| Mt. Vernon Township High School | Mt. Vernon | Little Egypt |
| Murphysboro High School | Murphysboro | Little Egypt |
| New Trier High School | Winnetka | Northeast |
| Newark High School | Newark | Prairie 8 |
| Newton High School | Newton | Eastern |
| Normal Community High School | Normal | Cenois |
| Normal West High School | Normal | Cenois |
| Okawville High School | Okawville | Kaskaskia |
| Orion High School | Orion | Blackhawk |
| Oswego High School | Oswego | North Central |
| Pekin High School | Pekin | Hopewell |
| Pope County High School | Golconda | Little Egypt |
| PORTA High School | Petersburg | Illinois Valley |
| Prairie Central High School | Fairbury | Prairie 8 |
| Prophetstown High School | Prophetstown | Northwest |
| Quincy Senior High School | Quincy | Illinois Valley |
| Reavis High School | Burbank | Northeast |
| Richards High School | Oak Lawn | Northeast |
| Richmond-Burton High School | Richmond | North Central |
| Ridgewood High School | Norridge | Northeast |
| Rochelle High School | Rochelle | Northwest |
| Round Lake High School | Round Lake | Northeast |
| Roxana High School | Roxana | Kaskaskia |
| Sangamon Valley High School | Niantic | Cenois |
| Serena High School | Serena | North Central |
| Shelbyville High School | Shelbyville | Eastern |
| SIUE Charter School | Edwardsville | Kaskaskia |
| South Elgin High School | South Elgin | North Central |
| Sparta High School | Sparta | Kaskaskia |
| St. Charles North High School | St. Charles | North Central |
| Stark County High School | Toulon | Hopewell |
| Stillman Valley High School | Stillman Valley | Northwest |
| Sullivan High School | Sullivan | Eastern |
| Taylorville High School | Taylorville | Cenois |
| Teutopolis High School | Teutopolis | Eastern |
| Triad High School | Troy | Kaskaskia |
| Trico High School | Campbell Hill | Little Egypt |
| Trinity Oaks Christian Academy | Cary | Northeast |
| Vernon Hills High School | Vernon Hills | Northeast |
| Villa Grove High School | Villa Grove | Kickapoo |
| Waterloo High School | Waterloo | Kaskaskia |
| Wesclin High School | Trenton | Kaskaskia |
| West Carroll High School | Savanna | Northwest |
| Wethersfield High School | Kewanee | Blackhawk |
| Wilmington High School | Wilmington | Prairie 8 |
| Wolcott College Prep | Chicago | Chicago |
| Zeigler-Royalton High School | Zeigler | Little Egypt |