Updated for 2011-12
Note: Some schools belong to more than one conference.
Note: Connersville and Rushville to join Eastern Indiana Athletic Conference beginning in 2013-14. Triton Central will leave its two conferences -- the Mid-Hoosier and the Mid-Indiana Football -- at the end of the 2011-12 season to join the Indiana Crossroads Conference.
Allen County: Adams Central, Bluffton, Garrett, Heritage, Leo, South Adams, Southern Wells, Woodlan.
Big Eight: Boonville, Jasper, Mt. Carmel (Illinois), Mt. Vernon, Princeton, Vincennes Lincoln, Washington.
Blue Chip: Barr-Reeve, Loogootee, North Knox, Northeast Dubois, Shoals, South Knox, Vincennes Rivet, Washington Catholic, Wood Memorial.
Central Indiana: Alexandria, Blackford, Eastbrook, Elwood, Frankton, Madison-Grant, Mississinewa, Oak Hill.
Conference Indiana: Bloomington North, Bloomington South, Columbus North, Franklin Central, Lawrence Central, Perry Meridian, Pike, Southport.
Duneland: Chesterton, Crown Point, Lake Central, Laporte, Merrillville, Michigan City, Portage, Valparaiso.
Eastern Indiana: Batesville, East Central, Franklin County, Greensburg, Lawrenceburg, South Dearborn.
Great Lakes Athletic: Hammond, Hammond Clark, Hammond Gavit, Hammond Morton.
Greater South Shore: Calumet, Hammond Bishop Noll, Lake Station Edison, Marquette Catholic, North Newton, River Forest, South Central (Union Mills) (Fb Only), Wheeler, Whiting.
Hoosier: Benton Central, Delphi, Lafayette Central Catholic, Rensselaer Central, Sheridan, Tipton, Twin Lakes, West Lafayette.
Hoosier Crossroads: Avon, Brownsburg, Fishers, Hamilton Southeastern, Harrison (West Lafayette), Lafayette Jefferson, Mccutcheon, Noblesville, Westfield, Zionsville.
Hoosier Heartland: Carroll (Flora), Clinton Central, Clinton Prairie, Rossville, Tri-Central.
Hoosier Heritage: Delta, Greenfield-Central, Mt. Vernon (Fortville), New Palestine, Pendleton Heights, Rushville, Shelbyville, Yorktown.
Hoosier Hills: Bedford North Lawrence, Columbus East, Floyd Central, Jeffersonville, Jennings County, Madison, New Albany, Seymour.
Indiana Crossroads: Beech Grove, Indianapolis Cardinal Ritter, Indianapolis Lutheran, Indianapolis Scecina, Lapel, Park Tudor, Speedway.
Indianapolis Public Schools: Indianapolis Arlington, Indianapolis Arsenal Technical, Indianapolis Broad Ripple, Indianapolis Emmerich Manual, Indianapolis George Washington, Indianapolis Howe Academy, Indianapolis Northwest.
Metropolitan: Ben Davis, Carmel, Center Grove, Lawrence North, North Central (Indianapolis), Terre Haute North, Terre Haute South, Warren Central.
Mid-Eastern: Blue River Valley, Cowan, Daleville, Monroe Central, Muncie Burris, Randolph Southern, Union (Modoc), Wapahani, Wes-Del.
Mid-Hoosier: Eastern Hancock, Edinburgh, Hauser, Indian Creek, Morristown, North Decatur, South Decatur, Southwestern (Shelbyville), Triton Central, Waldron.
Mid-Indiana (Football Only): Eastern Hancock, Indian Creek, Milan, North Decatur, South Decatur, Triton Central.
Mid-Indiana: Cass, Eastern (Greentown), Hamilton Heights, Maconaquah, Northwestern, Peru, Taylor, Western.
Mid-Southern: Austin, Brownstown Central, Charlestown, Clarksville, Corydon Central, Eastern (Pekin), North Harrison, Salem, Scottsburg, Silver Creek.
Mid-State: Decatur Central, Franklin Community, Greenwood, Martinsville, Mooresville, Plainfield, Whiteland.
Midwest: Caston, Frontier, North White, Pioneer, South Newton, Tri-County, West Central, Winamac.
North Central: Anderson, Huntington North, Kokomo, Logansport, Marion, Muncie Central, New Castle, Richmond.
Northeast Corner: Angola, Central Noble, Churubusco, Eastside, Fairfield, Fremont, Hamilton, Lakeland, Prairie Heights, West Noble, Westview.
Northeast Hoosier: Bellmont, Carroll (Fort Wayne), Columbia City, Dekalb, East Noble, Homestead, New Haven, Norwell.
Northern Indiana: Elkhart Central, Mishawaka, Mishawaka Marian, Penn, South Bend Adams, South Bend Clay, South Bend Riley, South Bend St. Joseph's, South Bend Washington.
Northern Lakes: Concord, Elkhart Memorial, Goshen, Northridge, Northwood, Plymouth, Warsaw, Wawasee.
Northern State: Bremen, Culver Community, Glenn, Jimtown, Knox, Laville, New Prairie, Triton.
Northland: Argos, Elkhart Christian, Oregon-Davis, Westville.
Northwest Crossroads: Andrean, Griffith, Highland, Hobart, Kankakee Valley, Lowell, Munster.
Northwestern: Gary Roosevelt, Gary Wallace, Gary West Side.
Ohio River Valley: Jac-Cen-Del, Milan, Rising Sun, Shawe Memorial, South Ripley, Southwestern (Hanover), Switzerland County.
Patoka Lake: Crawford County, Mitchell, Orleans, Paoli, Perry Central, Springs Valley, West Washington.
Pioneer: Baptist Academy, Greenwood Christian, Indianapolis Crispus Attucks, Indianapolis Shortridge, International, Liberty Christian.
Pocket: Forest Park, Gibson Southern, Heritage Hills, North Posey, Pike Central, South Spencer, Southridge, Tecumseh, Tell City.
Porter County: Boone Grove, Hanover Central, Hebron, Kouts, Lacrosse, Morgan Township, South Central (Union Mills), Washington Township.
Sagamore: Crawfordsville, Danville, Frankfort, Lebanon, North Montgomery, Southmont, Tri-West Hendricks, Western Boone.
Southern Athletic: Borden, Crothersville, Henryville, Lanesville, New Washington, South Central (Elizabeth).
Southern Indiana: Castle, Evansville Bosse, Evansville Central, Evansville F.J. Reitz, Evansville Harrison, Evansville Mater Dei, Evansville North, Evansville Reitz Memorial.
Southwest Indiana: Bloomfield, Clay City, Eastern Greene, Linton-Stockton, North Daviess, Shakamak, Union (Dugger), White River Valley.
Southwest Seven (Football Only): Eastern Greene, Linton-Stockton, North Central (Farmersburg), North Daviess, North Knox, Union (Dugger), Wood Memorial.
Summit: Fort Wayne Bishop Dwenger, Fort Wayne Bishop Luers, Fort Wayne Concordia, Fort Wayne Elmhurst, Fort Wayne North Side, Fort Wayne Northrop, Fort Wayne Snider, Fort Wayne South Side, Fort Wayne Wayne, Harding.
Three Rivers: Manchester, North Miami, Northfield, Rochester, Southwood, Tippecanoe Valley, Wabash, Whitko.
Tri-Eastern: Cambridge City Lincoln, Centerville, Hagerstown, Northeastern, Tri, Union City, Union County, Winchester.
Tri-River: Clay City, Eminence, Linton-Stockton, North Central (Farmersburg), Shakamak, Sullivan, Union (Dugger).
Wabash River: Attica, Covington, Fountain Central, North Vermillion, Riverton Parke, Rockville, Seeger, Turkey Run.
West Central: Cascade, Cloverdale, Greencastle, Monrovia, North Putnam, South Putnam.
Western Indiana: Brown County, Edgewood, Northview, Owen Valley, South Vermillion, Sullivan, West Vigo.
Independents
21st Century Charter School - Gary, Anderson Preparatory Academy, Bethany Christian, Bethesda Christian, Bowman Leadership Academy, Brebeuf Jesuit, Campagna Academy, Cannelton, Christian Academy Of Indiana, Connersville, Covenant Christian (DeMotte), Covenant Christian (Indianapolis), Culver Academies, East Chicago Central, Evansville Day, Faith Christian, Fall Creek Academy, Fort Wayne Blackhawk Christian, Fort Wayne Canterbury, Gary Lighthouse, Guerin Catholic, Heritage Christian, Herron, Holy Cross, Howe, Indiana Math & Science Academy, Indiana School For The Blind, Indiana School For The Deaf, Indianapolis Bishop Chatard, Indianapolis Cathedral, Indianapolis Marshall, Indianapolis Metropolitan, Irvington Preparatory Academy, Jay County, Lakeland Christian Academy, Lakewood Park Christian, Medora, Muncie Southside, New Harmony, North Judson, Oldenburg Academy, Providence, Rock Creek Academy, Roncalli, Seton Catholic, Signature, Tecumseh (Football Only) Tindley, Trinity Lutheran, University, West Gary Lighthouse.