The Berrien-Cass-St. Joseph (BCS) League is an athletic conference for high schools in southwest Michigan. Founded in 2014 with the inaugural season of play in 2014-15, the conference aspired to grow into a Southwest Michigan "super conference" with membership extending across all MHSAA classes and organized into divisions of schools with similar enrollments. Periodic realignment of divisions allowed members to remain in competition with like-sized schools within the conference thereby avoiding the disruptive effects of conference switching due to changing enrollment. The conference had a unique scheduling philosophy that did not force members to play against conference opponents in different divisions and respected the freedom of members to schedule rivals and other willing conference opponents regardless of size or division.

The Wolverine "B" Conference is a high school athletic conference in southwestern Michigan. It is composed of 8 Class A and B schools from the MHSAA in Allegan, Cass, Kalamazoo, St. Joseph, and Van Buren counties. Current members include: Edwardsburg, Niles, Otsego, Paw Paw, Plainwell, Sturgis, Three Rivers and Vicksburg.