The Southern Lakes Conference was formed in 1953 by eight high schools in southeastern Wisconsin: Burlington, Delavan (now Delavan-Darien), East Troy, Elkhorn, Lake Geneva, Mukwonago, Whitewater and Wilmot.
That same year, the Southern Lakes Conference was split into Eastern and Western Divisions:[6] In 1980, Mukwonago left to join the Parkland Conference[7] as part of a major realignment of southeastern Wisconsin high schools.
Big Foot followed them out of the conference two years later, and they were replaced by Jefferson[8] and Milton, with Badger moving to the Eastern Division to keep divisions at six members each, an alignment that would remain in place until 1997:[9] In 1997, all of the schools in the Eastern Division left the Southern Lakes Conference: Burlington joined the Southeast Conference,[10] and the remaining schools formed the Lakeshore Conference[11] along with St. Catherine's High School in Racine and St. Joseph High School in Kenosha.
Fort Atkinson joined the Southern Lakes that same year to bring conference membership to seven schools in a single division.
[15] They replaced Delavan-Darien, who left for the Rock Valley Conference that same year.