Membership in the Big Nine remained stable for the next 21 years, with only the newly merged Carman-Ainsworth taking Carman's place in the conference in 1986.
[2] Clio in 2005 and Swartz Creek in 2006 moved to the Flint Metro League as the conference was perceived as being overpowering to those schools.
[2] Grand Blanc Schools moved to the Kensington Lakes Activities Association starting in the 2009–2010 season.
[5] In August 2011, the remaining Big Nine members applied together to join the Saginaw Valley League and were accepted to join starting in the 2012–2013 school year, forming Saginaw Valley's southern division with the other Flint City District High Schools.
[1][7] Of the 11 existing former members, four are in the Flint Metro League, three are in the Saginaw Valley League, two are in the Genesee Area Conference, one is in the Kensington Lakes Activities Association, and one is in the Capital Area Activities Conference.