▁football ▁championship ▁game ▁to ▁comp ly ▁with ▁NCAA ▁rules . ▁ ▁In ▁response ▁to ▁the ▁depart ures ▁of ▁three ▁main st ay ▁members ▁and ▁T C U , ▁the ▁Big ▁East ▁announced ▁on ▁December ▁ 7 ▁that ▁five ▁schools ▁would ▁join ▁the ▁conference ▁for ▁football ▁in ▁ 2 0 1 3 : ▁Houston , ▁SM U , ▁and ▁U CF ▁would ▁join ▁as ▁full ▁members ▁in ▁all ▁sports , ▁while ▁Bo ise ▁State ▁and ▁San ▁Diego ▁State ▁would ▁leave ▁the ▁Mountain ▁West ▁and ▁become ▁football - only ▁members . ▁ ▁Bo ise ▁State ' s ▁other ▁sports ▁would ▁return ▁to ▁the ▁Western ▁Athlet ic ▁Conference , ▁while ▁San ▁Diego ▁State ' s ▁would ▁re join ▁the ▁Big ▁West ▁after ▁a ▁ 3 5 - year ▁absence . ▁Later ▁develop ments ▁in ▁conference ▁real ignment , ▁namely ▁the ▁dem ise ▁of ▁both ▁the ▁Big ▁East ▁and ▁W AC ' s ▁football ▁compet itions ▁following ▁the ▁ 2 0 1 2 ▁season , ▁prompt ed ▁both ▁schools ▁to ▁abandon ▁these ▁plans ▁and ▁remain ▁the ▁Mountain ▁West . ▁ ▁Teams ▁transition ing ▁to ▁F BS ▁Four ▁schools ▁began ▁a ▁two - year ▁transition ▁from ▁the ▁Football ▁Championship ▁Sub div ision ▁( FC S ) ▁to ▁F BS ▁in ▁July ▁ 2 0 1 1 . ▁These ▁schools ▁competed ▁as ▁FC S ▁members ▁in ▁ 2 0 1 1 ▁and ▁would ▁be ▁upgrad ed ▁to ▁prov is ional ▁F BS ▁status ▁in ▁ 2 0 1 2 . ▁Full ▁F BS ▁membership ▁would ▁follow ▁in ▁ 2