The Southern Indiana Athletic Conference (SIAC) is a high school athletic conference based in

Evansville, Indiana Evansville is a city in Vanderburgh County, Indiana, United States, and its county seat. With a population of 118,414 at the 2020 United States census, 2020 census, it is Indiana's List of cities in Indiana, third-most populous city after India ...

. Five of the conferences 10 schools; Bosse, Central, Harrison, North, and Reitz; comprise the public

Evansville Vanderburgh School Corporation The Evansville Vanderburgh School Corporation (EVSC) is a public school corporation serving Evansville, Indiana and Vanderburgh County, Indiana, Vanderburgh County; its boundary includes the entire county. It is the third largest school distri ...

. Mater Dei and Memorial are private

Catholic The Catholic Church (), also known as the Roman Catholic Church, is the List of Christian denominations by number of members, largest Christian church, with 1.27 to 1.41 billion baptized Catholics Catholic Church by country, worldwid ...

high schools run by the

Roman Catholic Diocese of Evansville The Diocese of Evansville () is a Latin Church diocese of the Catholic Church in Southwestern Indiana in the United States. The mother church of the diocese is St. Benedict Cathedral in Evansville. The diocese was formed in 1944 from what was t ...

, and the largest member is

Castle A castle is a type of fortification, fortified structure built during the Middle Ages predominantly by the nobility or royalty and by Military order (monastic society), military orders. Scholars usually consider a ''castle'' to be the private ...

, a public school located in neighboring

Newburgh Newburgh (''"new"'' + the English/Scots word ''"burgh"'') may refer to: Places Scotland *Newburgh, Fife, a former royal burgh *Newburgh, Aberdeenshire, a village England *Newburgh, Lancashire, a village * Newburgh, North Yorkshire, a village ...

in Warrick County under the

Warrick County School Corporation The Warrick County School Corporation (WCSC) is the second largest public school-governing body in Southwestern Indiana, and the 27th largest in the state. It is responsible for providing education to the second largest county in the area, W ...

. The league was founded in 1936, and at one point stretched far across southern and western 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 Jasper, an aggregate of microgranular quartz and/or cryptocrystalline chalcedony and other mineral phases, is an opaque, impure variety of silica, usually red, yellow, brown or green in color; and rarely blue. The common red color is due to ...

and Vincennes Lincoln announced in May 2019 that they would leave the disbanding Big Eight Conference to rejoin the Southern Indiana Athletic Conference beginning with the 2020–21 season. Vincennes Lincoln announced in January 2025, that it will depart the SIAC for the

Western Indiana Conference The Western Indiana Conference is the name of two IHSAA-sanctioned conferences based in West Central Indiana. The first formed as an eight-team league that formed as a basketball league in 1944 as the West Central Conference. The league starte ...

after the 2025-26 season, citing lack of ability to compete with the Evansville schools, setting off a possible search for a replacement which may involve schools like Heritage Hills and Gibson Southern of the Pocket Athletic Conference

Member schools

Former members

# Linton played concurrently in the SIAC and West Central Conference 1944–45, and the SIAC and WIC 1945–51. # Sullivan played in both the SIAC and West Central Conference 1944–45, and the SIAC and WIC 1945–62.

Membership timeline

DateFormat = yyyy ImageSize = width:750 height:auto barincrement:22.5 Period = from:1935 till:2035 TimeAxis = orientation:horizontal PlotArea = right:30 left:0 bottom:50 top:5 Colors = id:barcolor value:rgb(0.99,0.7,0.7) id:line value:black id:bg value:white PlotData= width:15 textcolor:black shift:(5,-5) anchor:from fontsize:s bar:1 color:red from:1935 till:1963 text: Bicknell (1935-1963) bar:2 color:red from:1935 till:1964 text: Bloomington (1995-2005) bar:3 color:red from:1935 till:end text: Evansville Bosse (1935-present) bar:4 color:red from:1935 till:end text: Evansville Central (1935-present) bar:5 color:red from:1935 till:end text: Evansville F.J. Reitz (1935-present) bar:6 color:red from:1935 till:1951 text: Linton (1935-1940, 1942-1951) bar:7 color:red from:1935 till:1978 text: New Albany (1935-1978) bar:8 color:red from:1935 till:1980 text:

Princeton Princeton University is a private Ivy League research university in Princeton, New Jersey, United States. Founded in 1746 in Elizabeth as the College of New Jersey, Princeton is the fourth-oldest institution of higher education in the Unit ...

(1935-1980) bar:9 color:red from:1935 till:1962 text:

Sullivan Sullivan may refer to: People Characters * Chloe Sullivan, from the television series ''Smallville'' * Colin Sullivan, a character in the film ''The Departed'', played by Matt Damon * Harry Sullivan (''Doctor Who''), from the British science f ...

(1935-1962) bar:10 color:red from:1935 till:1980 text: Vincennes Lincoln (1935-1980) bar:10 color:red from:2020 till:end text: Vincennes Lincoln (2020–present) bar:11 color:red from:1936 till:1980 text:

Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...

(1936-1980) bar:12 color:red from:1941 till:1980 text: Boonville (1941-1980) bar:13 color:red from:1942 till:1973 text:

Bedford Bedford is a market town in Bedfordshire, England. At the 2011 Census, the population was 106,940. Bedford is the county town of Bedfordshire and seat of the Borough of Bedford local government district. Bedford was founded at a ford (crossin ...

(1942-1973) bar:14 color:red from:1942 till:1970 text: Huntingburg (1942-1970) bar:15 color:red from:1947 till:end text: Reitz Memorial (1947-present) bar:16 color:red from:1953 till:1980 text:

(1953-1980, 2020-present) bar:16 color:red from:2020 till:end text:

(2020–present) bar:17 color:red from:1953 till:1980 text: Tell City (1953-1980) bar:18 color:red from:1954 till:end text: Mater Dei (1954-present) bar:19 color:red from:1958 till:end text: Evansville North (1958-present) bar:20 color:red from:1959 till:1980 text:

Mount Vernon Mount Vernon is the former residence and plantation of George Washington, a Founding Father, commander of the Continental Army in the Revolutionary War, and the first president of the United States, and his wife, Martha. An American landmar ...

(1959-1980) bar:21 color:red from:1961 till:1972 text: Evansville Rex Mundi (1961-1972) bar:22 color:red from:1963 till:end text: Evansville Harrison (1963-present) bar:23 color:red from:1963 till:1968 text: North Knox (1963-1968) bar:24 color:red from:1964 till:end text:

(1964-present) bar:25 color:red from:1971 till:1982 text: Terre Haute North (1971-1982) bar:26 color:red from:1971 till:1982 text: Terre Haute South] (1971-1982) ScaleMajor = gridcolor:line unit:year increment:5 start:1935 TextData = fontsize:L textcolor:black pos:(175,30) # tabs:(0-center) text:"SIAC Membership History"

Conference championships

Football

Boys basketball

Boys cross country

Wrestling

Boys soccer

Boys tennis

Boys swimming

Baseball

Boys golf

Boys track and field

Volleyball

Girls basketball

Girls cross country

Girls soccer

Girls tennis

Girls swimming

Softball

Girls golf

Girls track and field

State titles

John H. Castle Knights

*Football (1982, 1994) *Boys Soccer (2000) *Girls Basketball (2006) *Softball (2001)

Evansville Benjamin Bosse Bulldogs

* Boys Basketball (1943, 1944, 1962)

Evansville Central Bears

None

Evansville William Henry Harrison Warriors

* Girls Golf (1989) * Boys Golf (2012)

Evansville Mater Dei Wildcats

* Baseball (1999) * Boys Basketball (2004) * Girls Basketball (2012, 2013) * Football (2001, 2022) * Wrestling (1986, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2006, 2007, 2021) * Softball (2016) * Girls Soccer (2017, 2018, 2019)

Evansville North Huskies

* Baseball (1962*) * Boys Basketball (1967) * Boys Golf (2000) * Girls Golf (2014, 2015, 2016, 2018, 2020, 2021) ''* = indicates title won before Indiana High School Athletic Association, IHSAA State Tournament was initiated''

Evansville Francis Joseph Reitz Panthers

* Girls Basketball (1981) * Football (1933*, 1940*, 1948*, 1953*, 1956*, 1957*, 1960*, 1961*, 1971*, 2007, 2009) * Bowling (2012+) ''* = indicates title won before Indiana High School Athletic Association, IHSAA State Tournament was initiated''
''+ = indicates title sanctioned by the Indiana High School Bowling Association''

Evansville Reitz Memorial Tigers

* Baseball (1978, 1989, 1993) * Football (1937*, 1958*, 2017, 2019) * Girls Soccer (1989*, 1997, 2008, 2013, 2017, 2021, 2022) * Softball (2002) * Girls Tennis (1991, 1993, 1994, 1995, 1996, 2012) * Boys Soccer (1979*, 1980*, 1981*, 1983*, 1984*, 1986*, 1988*, 1989*, 1990*, 1992*, 2007, 2008, 2016, 2017, 2019, 2020) * Girls Basketball (2011) ''* = indicates title won before Indiana High School Athletic Association, IHSAA State Tournament was initiated''

Jasper Wildcats

*1949 Boys' Basketball *1996 Baseball *1997 Baseball *1998 Baseball (3A) *1999 Boys' Tennis *2000 Baseball (3A) *2001 Football (4A) *2006 Baseball (3A) *2021 Baseball (4A) *2025 Girls’ Tennis

Vincennes Lincoln Alices

*1923 Boys' Basketball *1981 Boys' Basketball *2002 Baseball (3A)

Neighboring conferences

Big Eight Conference The Big Eight Conference was a National Collegiate Athletic Association (NCAA)-affiliated Division I-A college athletic association that sponsored American football, football. It was formed in January 1907 as the Missouri Valley Intercollegiate ...

* Pocket Athletic Conference

References

{{Indiana High School Athletic Association (IHSAA) Indiana high school athletic conferences High school sports conferences and leagues in the United States Evansville, Indiana