The collegiate sports landscape has undergone significant transformation in recent decades, particularly in the realm of conference affiliations. While the elite Power Four conferences—ACC, Big Ten, Big 12, and SEC—have largely stabilized their memberships for the upcoming 2026-27 football season, other Football Bowl Subdivision (FBS) leagues, most notably the Pac-12, continue to experience considerable flux. This ongoing realignment reflects a complex interplay of competitive, financial, and strategic considerations driving changes across college athletics.
Over the past 30 years, numerous conferences have witnessed an ebb and flow of member institutions, with some growing substantially and others facing near dissolution. These shifts have had profound impacts on rivalries, travel logistics, and broadcast rights, reshaping the very fabric of college sports. Understanding these historical and projected changes is crucial for comprehending the current and future state of intercollegiate competition.
The Shifting Sands of Major Conferences
The major college athletic conferences, primarily the Power Four, have experienced distinct phases of expansion and contraction over the last three decades, eventually leading to a period of relative stability for the 2026 season. Initially, many of these conferences, like the ACC and Big Ten, began with fewer members in 1996, gradually expanding through the early 2000s and into the 2010s to reach their current, larger sizes. This growth was often driven by the desire to increase media market penetration, enhance competitive strength, and secure more lucrative television deals. By 2025, the ACC and Big Ten are projected to have 17 and 18 members, respectively, reflecting substantial growth from their original configurations, though these numbers are expected to hold steady for 2026, signaling a temporary pause in expansion for these dominant leagues.
Similarly, the Big 12 and SEC have also undergone significant transformations, albeit with different timelines and motivations. The Big 12, which started with 12 teams in 1996, expanded and contracted multiple times, eventually settling on 16 members by 2025, before stabilizing for 2026. The SEC, a perennial powerhouse, grew from 12 members in 1996 to 16 by 2025, adding high-profile programs that further solidified its competitive and financial dominance. The consistency in membership for these major conferences in 2026 suggests a current equilibrium, where the dominant players have largely settled their rosters, setting the stage for intense competition within established frameworks.
Dynamic Changes Across Other FBS Leagues
Beyond the Power Four, other FBS conferences have navigated an even more turbulent landscape of membership changes, with some leagues experiencing dramatic overhauls. The American Athletic Conference (AAC), formed in 2013, quickly became a destination for schools seeking a higher competitive profile, expanding to 14 members by 2023 and largely maintaining that size into 2026, incorporating football-only and non-football affiliates. Conference USA, in contrast, has seen a more volatile evolution, shrinking from its original six members in 1996 to nine in 2023, and then fluctuating between 10 and 12 members by 2026, reflecting the constant repositioning of institutions seeking better competitive or financial alignments, often driven by shifts in the Power Four.
The Mid-American Conference (MAC) and the Mountain West Conference (MWC) have also exhibited dynamic changes. The MAC expanded from 10 members in 1996 to 12 by 2023, and then to 13 by 2025, adding institutions like Massachusetts and Sacramento State (football only) to bolster its competitive offerings. The MWC, born from the restructuring of the Big West and WAC, saw its membership fluctuate significantly, reaching 13 in 2025 before a slight contraction and diversification of its affiliate members by 2026. However, the most striking changes are evident in the Pac-12, which went from 10 members in 1996 to 12 in 2011, only to shrink drastically to a mere two members by 2024, and then attempting to rebuild with a mix of traditional and non-traditional members by 2026. These widespread changes across non-Power Four conferences highlight a continuous, sometimes desperate, scramble for stability, relevance, and opportunity in the ever-evolving world of college sports.
