It was founded in 1933 and disbanded in 1970, and all public school members belonged to the Wisconsin Interscholastic Athletic Association.
The Peninsula Conference was formed in 1933 by six small high schools in northeastern Wisconsin: Brussels, Casco, Gibraltar, Luxemburg, Mishicot and Sevastopol.
[1] It was named the Peninsula Conference because its six members were located in or near the Door Peninsula, and the conference featured schools from Door, Kewaunee and Manitowoc Counties.
Because of its geography and lack of proximity to similarly-sized schools, conference membership remained relatively stable over the course of its history.
[2][3] Consolidation claimed another member of the conference in 1967 when Luxemburg and Casco merged to form Luxemburg-Casco High School.