Greater South Shore Athletic Conference (IHSAA)

The Greater South Shore Conference is an eight-member Indiana High School Athletic Association athletic conference spanning Lake and Porter counties in Northwest Indiana. Two other members, Boone Grove and Gary West Side, participate only in football, with Boone Grove otherwise participating in the Porter County Conference and Gary West Side otherwise participating in the Great Lakes Athletic Conference.

Hanover Central High School joined the conference in 2013, Griffith High School joined the conference in 2017, and Illiana Christian High School joined the conference in 2021. Marquette Catholic High School and North Newton High School left the conference concurrent with Griffith joining, with Marquette becoming an independent and North Newton joining the Midwest Conference. The conference has two divisions for football, with the North Division including Boone Grove, Hammond Bishop Noll, Lake Station Edison and River Forest, and the South Division including Calumet, Gary West Side, Griffith, Wheeler and Whiting. Illiana Christian does not have a football team.

Due to continued rapid growth, Hanover Central left the conference in 2023 to join the Northwest Crossroads Conference. Gary West Side joined as a football-only member upon Hanover Central's departure.

Membership

 * 1) Boone Grove and Gary West Side are football-only members.

Former members

 * 1) Marquette does not play football.

Football

 * N- North Division, S- South Division.

Bishop Noll Warriors (6)

 * 1968 Baseball
 * 1981 Boys Swimming & Diving
 * 1984 Boys Swimming & Diving
 * 1989 Football (3A)
 * 2004 Baseball (2A)
 * 2018 Soccer (2A)

Marquette Catholic Blazers ( 11 )

 * 1999 Volleyball (A)
 * 2000 Volleyball (A)
 * 2001 Volleyball (A)
 * 2004 Volleyball (A)
 * 2005 Volleyball (A)
 * 2006 Volleyball (A)
 * 2007 Volleyball (A)
 * 2008 Volleyball (A)
 * 2014 Boys Basketball (A)
 * 2018 Girls Basketball (A)
 * 2019 Girls Basketball (A)

Wheeler High School (2)

 * 2010 Boys Basketball (2A)
 * 2010 Softball (2A)

Calumet Warriors (1)

 * 1965 Boys Cross-Country

Illiana Christian Vikings (2)

 * 2022 Baseball (2A)
 * 2023 Baseball (2A)

Resources

 * IHSAA Conferences
 * IHSAA Directory
 * IHSAA State Champions
 * IHSAA Classification
 * IHSAA Football Classification