Great Lakes Athletic Conference (IHSAA)

A four-member IHSAA-sanctioned conference located entirely within Lake County. All members are in the city of Hammond. The conference is among the youngest in the state, created in 2007 following the disbandment of the Lake Athletic Conference and after failing to find acceptance in another conference for each of the four schools. The GLAC's "sister" conferences also created from the Lake Athletic Conference are the Greater South Shore Athletic Conference and the Northwest Crossroads Conference.

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