| Super-Sectional Sites | Correlated Sectional Sites | Correlated Regional Sites |
| Decatur (Millikin University) | Mendota | Eureka |
| Fairbury (Prairie Central) |
| Princeton |
| Spring Valley (Hall) |
| Petersburg (PORTA) | Manito (Midwest Central) |
| Maroa (M.-Forsyth) |
| Normal (University) |
| Pleasant Plains |
| Carbondale (SIU) | Eldorado | Carmi (C.-White County) |
| Johnston City |
| Junction (Gallatin County) |
| Metropolis (Massac County) |
| Sparta | Anna (A.-Jonesboro) |
| Campbell Hill (Trico) |
| Nashville |
| Sesser (S.-Valier) |
| Kankakee (Olivet Nazarene U.) | Danville (Schlarman) | Downs (Tri-Valley) |
| Georgetown (G.-Ridge Farm) |
| Hoopeston (H. Area) |
| Monticello |
| Plano | Dwight |
| Manteno |
| Sandwich |
| Watseka |
| DeKalb (NIU) | Byron | Aurora (Central Catholic) |
| Burlington (Central) |
| South Beloit |
| Woodstock (Marian) |
| Rock Falls | Hanover (River Ridge) |
| Oregon |
| Pecatonica |
| Savanna |
| Wheaton (Wheaton College) | Lansing (Illiana Christian) | Chicago (Agricultural Science) |
| Chicago (St. Francis de Sales) |
| Chicago (University) |
| Palos Heights (Chicago Christian) |
| Lisle (Sr.) | Addison (Driscoll) |
| Chicago (St. Gregory) |
| Melrose Park (Walther Lutheran) |
| Niles (Northridge Prep) |
| Edwardsville (SIU-E) | Breese (Mater Dei) | Hillsboro |
| Trenton (Wesclin) |
| Vandalia |
| Wood River (East Alton-W.R.) |
| Nokomis | Auburn |
| Carrollton |
| Girard |
| Griggsville (G.-Perry) |
| Moline (Mark of the Quad Cities) | Havana | Carthage |
| Macomb |
| Mt. Sterling (Brown County) |
| Quincy (Notre Dame) |
| Taylor Ridge (Rockridge) | Alexis |
| Kewanee (H.S.) |
| Knoxville |
| Orion |
| Charleston (EIU) | Casey (C.-Westfield) | Chrisman |
| Moweaqua (Central A & M) |
| Shelbyville |
| Tuscola |
| Olney (East Richland) | Bridgeport (Red Hill) |
| Effingham (St. Anthony) |
| Flora |
| St. Elmo |
