The South Atlantic Conference (SAC) is a collegiate athletic conference which operates in the southeastern United States. It participates in the National Collegiate Athletic Association (NCAA)'s Division II level. The SAC was founded in 1975 as a football-only conference and became an all-sports conference beginning with the 1989–90 season.
The Pocket Athletic Conference (PAC) is a high school athletic conference in Southwestern Indiana with its headquarters at Forest Park. Most of the conference's 13 members are mainly Class 2A and 3A public high schools currently located in Daviess, Dubois, Gibson, Perry, Pike, Posey, Spencer, and Warrick counties. Only one, Tecumseh, is a 1A and as such operates its football program independently of the PAC and remains independent in the sport, playing schools much closer to its size than its much larger borderline 3A or 3A and 4A fellow members.
The Southern Indiana Athletic Conference (SIAC) is a high school athletic conference based in Evansville, Indiana. Five of the conferences eight schools; Bosse, Central, Harrison, North, and Reitz; comprise the public Evansville Vanderburgh School Corporation. Mater Dei and Memorial are private Catholic high schools ran by the Roman Catholic Diocese of Evansville and Vincennes, and the largest member is Castle, a public school located in neighboring Newburgh in Warrick County under the Warrick County School Corporation. The league was founded in 1936, and at one point stretched far across South and West Indiana: from Mount Vernon in the west to New Albany in the east, and from Evansville in the south to Terre Haute in the north. Jasper and Vincennes Lincoln announced in May 2019 that they will leave the disbanding Big Eight Conference to rejoin the Southern Indiana Athletic Conference beginning with the 2020-21 season.
The Patoka Lake Athletic Conference is a high school athletic conference in southern Indiana. The conferences members are small high schools located in Crawford, Lawrence, Orange, Perry, and Washington counties. The conference was formed in 1979, and has only had one change in membership history, when member Crawford County added football in 2007 to take football membership to six.
The Midwest Athletic Conference is a high school athletic conference in northwestern Indiana, which has existed in two different incarnations, with a third planned to form in 2018. The original conference began in 1932, consisting of schools that were larger than most of their counterparts in their local county leagues. The schools were based in Benton, Fountain, Jasper, Newton, Tippecanoe, Warren, and White counties. The forming of the Kankakee Valley Conference the next year caused a slight fluctiation over the next couple of years, as schools realigned themselves within the two leagues, with some schools claiming dual membership. The league folded in 1947, as size disparities and willingness to sponsor some sports led to schools going their separate ways.
The Lake Suburban Conference was a high school athletic conference serving schools in the Indiana High School Athletic Association. The conference was formed in 1949 as the Calumet Athletic Conference, and disbanded in 1992. Most of its schools were located in Lake County, though two members during the CAC period were from Porter County.
The Northern Lakes Conference of Indiana (NLC) is an IHSAA-sanctioned athletic conference of high schools located within Elkhart, Kosciusko and Marshall counties in Indiana, United States.
The Ohio River Valley Conference is an Indiana High School Athletic Association-sanctioned conference located in Jefferson, Ohio, Ripley, and Switzerland counties. Formed in 1952, the conference has been fairly stable throughout its history, as five of the current seven members are original members.
The Summit Athletic Conference, or SAC, is a high school athletic conference consisting of eight high schools located in Fort Wayne, Indiana. Three of the schools are private; one being a Lutheran academy, and the other two being Catholic preparatories. The rest are public schools, being part of Fort Wayne Community Schools. Two limited members are part of Northwest Allen County Schools and Southwest Allen County Schools.
The Hoosier Athletic Conference is a ten-member IHSAA-Sanctioned conference located within Benton, Cass, Hamilton, Howard, Jasper, Tippecanoe, Tipton and White counties. The conference first began in 1947, and has been in constant competition except for the 1997-98 school year, when membership dropped to three schools. The conference added four schools from the folding Mid-Indiana Conference in 2015.
The Mid-Hoosier Conference is a seven-member IHSAA-sanctioned athletic association located within Bartholomew, Decatur, Johnson, and Shelby Counties in Central Indiana.
A ten-member IHSAA-Sanctioned Athletic Conference within the South Central Indiana counties of Clark, Harrison, Jackson, Scott, and Washington.
The Northwest Crossroads Conference is a six-member IHSAA-sanctioned athletic conference. Five of the six institutions are in Lake County, while the sixth, Kankakee Valley, is in neighboring Jasper County. This conference was created in 2007, following the disbandment of the Lake Athletic Conference. Griffith left the conference after the 2016–17 school year to join the Greater South Shore Athletic Conference (IHSAA).
An eight-member IHSAA-sanctioned athletic located within Clay, Daviess, Greene and Sullivan Counties in Southwest and West Central Indiana. North Central (Farmersburg) joined in 2010 with the folding of the Tri-River Conference. Prior to that time, Clay City, Linton Stockton, Shakamak, and Union (Dugger) also participated in the Tri-River Conference concurrently while playing in the SWIAC. The conference was originally formed in 1939, but information on early membership between then and 1958 is incomplete.
The Tri-River Conference, established around 1965, was a seven-member IHSAA-sanctioned conference located within Clay, Greene, Morgan, and Sullivan counties in Indiana. It was named for the southern Eel, White, and Wabash rivers which flow through the territory of the conference. Clay City, Linton Stockton, Shakamak, and Union (Dugger) high schools also participated in the Southwestern Indiana Conference at the same time. The conference disbanded at the end of the 2009-2010 school year.
The White River Conference was an IHSAA-sanctioned conference located within rural areas of East Central Indiana, that existed twice, once from 1954 to 1977, and from 1989 to 2010. The first version of the conference was founded as a home for high schools in Madison County who weren't in the Central Indiana Athletic Conference. The conference would expand quickly from six to nine schools, as two new high schools in Anderson and Middletown, a school in Henry County, were added within two years. Membership was generally not stable until 1969, as Madison Heights left, Highland was forced out and eventually added back into the conference, St. Mary's closed, member schools consolidated, and schools from neighboring Delaware and Hancock counties were added. Eventually, large disparities in enrollment causing the conference to disband, as city and consolidated schools outgrew their rural counterparts.. Schools would move into the Big Blue River Conference, Classic Athletic Conference, and Mid-Eastern Conference.
The Classic Athletic Conference was a short-lived IHSAA-sanctioned conference based in northern East Central Indiana. Formed by the largest schools in their predecessor conferences, the conference only lasted nine years before disbanding
The Blue River Conference was an IHSAA-sanctioned conference that originally began as the Crawford County Conference. The small membership decided to join with schools from neighboring Harrison and Perry counties in 1959, changing to the Blue River Conference moniker. Originally consisting of smaller schools in the area, but as member schools consolidated mostly with each other, the schools became larger while the membership shrank. The only two non-consolidation additions were North Central in 1962, and Cannelton in 1974. Membership had shrank to five schools in 1976 when four schools combined to form Crawford County. The discrepancy in size between the schools caused its demise in 1979, as the schools moved to the Patoka Lake, Southern, and Three Rivers conferences.
The Lost River Athletic Conference was a short-lived IHSAA-sanctioned conference in southern Indiana, formed in 1971. Member schools hailed from Clark, Dubois, Martin, Orange, and Washington counties. Membership was never stable in its six-year span, and multiple schools held dual membership in other conferences.
