The Duneland Athletic Conference (DAC) is a high school athletic conference in Indiana serving eight members of the Indiana High School Athletic Association. Member schools are located in the counties of Lake, LaPorte, and Porter along Indiana's Lake Michigan shore. Each school is classified based on enrollment as 6A or 5A for football and 4A for basketball, the classes for the largest schools in Indiana. The Duneland Conference is also quite known for its gymnastics programs which have won a combined total of 27 state championship and state runner-up titles.
In 2002, five schools - East Chicago Central High School, Elkhart Central High School, Lake Central High School, Mishawaka High School, & Penn High School - submitted proposals to join the DAC when expansion talks began following Hobart's announcement it would leave to join the Lake Athletic Conference. Lake Central, Mishawaka and Penn were invited to join the DAC. Mishawaka, shortly followed by Penn, opted to not join the conference. These two schools cited wanting Elkhart Central and East Chicago Central to have been invited to join as well. This coupled with the extensive travel times to Lake County schools and the time zone difference led to their decision to remain in the Northern Indiana Conference.
Chesterton Trojans (10)
Crown Point Bulldogs (7)
LaPorte Slicers (10)
Lake Central Indians (8)
Merrillville Pirates (7)
Michigan City Wolves (0)
Portage Indians (12)
Valparaiso Vikings (20)
Hobart Brickies (8)
Michigan City Rogers Raiders (1)