Scores of schools have changed conference affiliation over the past century, but the pace has quickened as schools search for more stability and more revenue in the college athletics arms race.
In July and August, a dozen more schools officially changed affiliation, changing the lineups of all four major conferences and leaving the Pac-12 with just two teams — but not for long. The moves continued into the fall as the Pac-12 raided the Mountain West.
A look at football membership in the Power Four and the Group of Five, largely dating to the launch of the Big 12 in 1996:
ACC
1996 (9): Clemson, Duke, Florida State, Georgia Tech, Maryland, North Carolina, North Carolina State, Wake Forest, Virginia.
2023 (14): Boston College, Clemson, Duke, Florida State, Georgia Tech, Louisville, Miami, North Carolina, North Carolina State, Pittsburgh, Syracuse, Virginia, Virginia Tech, Wake Forest.
2024 (17): Boston College, California, Clemson, Duke, Florida State, Georgia Tech, Louisville, Miami, North Carolina, North Carolina State, Pittsburgh, SMU, Stanford, Syracuse, Virginia, Virginia Tech, Wake Forest.
BIG TEN
1996 (11): Illinois, Indiana, Iowa, Michigan, Michigan State, Minnesota, Northwestern, Ohio State, Penn State, Purdue, Wisconsin.
2023 (14): Illinois, Indiana, Iowa, Maryland, Michigan, Michigan State, Minnesota, Nebraska, Northwestern, Ohio State, Penn State, Purdue, Rutgers, Wisconsin.
2024 (18): Illinois, Indiana, Iowa, Maryland, Michigan, Michigan State, Minnesota, Nebraska, Northwestern, Ohio State, Oregon, Penn State, Purdue, Rutgers, Southern California, UCLA, Washington, Wisconsin.
BIG 12
1996 (12): Baylor, Colorado, Iowa State, Kansas, Kansas State, Missouri, Nebraska, Oklahoma, Oklahoma State, Texas, Texas A&M, Texas Tech.
2023 (14): BYU, Baylor, Cincinnati, Central Florida, Houston, Iowa State, Kansas, Kansas State, Oklahoma, Oklahoma State, TCU, Texas, Texas Tech, West Virginia.
2024 (16): Arizona, Arizona State, BYU, Baylor, Cincinnati, Central Florida, Colorado, Houston, Iowa State, Kansas, Kansas State, Oklahoma State, TCU, Texas Tech, Utah, West Virginia.
PAC-12
1996 (10): Arizona, Arizona State, California, Oregon, Oregon State, Southern California, Stanford, UCLA, Washington, Washington State.
2023 (12): Arizona, Arizona State, California, Colorado, Oregon, Oregon State, Stanford, Southern California, UCLA, Utah, Washington, Washington State.
2024 (2): Oregon State, Washington State.
2026 (8): Boise State, Colorado State, Fresno State, Gonzaga (non-football), Oregon State, San Diego State, Utah State, Washington State.
SEC
1996 (12): Alabama, Arkansas, Auburn, Florida, Georgia, Kentucky, LSU, Mississippi, Mississippi State, South Carolina, Tennessee, Vanderbilt.
2023 (14): Alabama, Arkansas, Auburn, Florida, Georgia, Kentucky, LSU, Mississippi, Mississippi State, Missouri, South Carolina, Tennessee, Texas A&M, Vanderbilt.
2024 (16): Alabama, Arkansas, Auburn, Florida, Georgia, Kentucky, LSU, Mississippi, Mississippi State, Missouri, Oklahoma, South Carolina, Tennessee, Texas, Texas A&M, Vanderbilt.
AMERICAN ATHLETIC
2013 (10, first season): Central Florida, Cincinnati, Connecticut, Houston, Louisville, Memphis, Rutgers, SMU, South Florida, Temple.
2023 (14): Charlotte, East Carolina, Florida Atlantic, Memphis, Navy, North Texas, Rice, SMU, South Florida, Temple, Tulane, Tulsa, UAB, UTSA.
2024 (14): Army, Charlotte, East Carolina, Florida Atlantic, Memphis, Navy, North Texas, Rice, South Florida, Temple, Tulane, Tulsa, UAB, UTSA.
CONFERENCE USA
1996 (6): Cincinnati, Houston, Louisville, Memphis, Southern Mississippi, Tulane.
2023 (9): Florida International, Jacksonville State, Liberty, Louisiana Tech, Middle Tennessee State, New Mexico State, Sam Houston State, UTEP, Western Kentucky.
2024 (10): Florida International, Jacksonville State, Kennesaw State, Liberty, Louisiana Tech, Middle Tennessee State, New Mexico State, Sam Houston State, UTEP, Western Kentucky.
2025 (11): Delaware, Florida International, Jacksonville State, Kennesaw State, Liberty, Louisiana Tech, Middle Tennessee State, New Mexico State, Sam Houston State, UTEP, Western Kentucky.
MID-AMERICAN
1996 (10): Akron, Ball State, Bowling Green, Central Michigan, Eastern Michigan, Kent State, Miami (Ohio), Ohio, Toledo, Western Michigan.
2023 (12): Akron, Ball State, Bowling Green, Buffalo, Central Michigan, Eastern Michigan, Kent State, Miami (Ohio), Ohio, Northern Illinois, Toledo, Western Michigan.
2025 (13): Akron, Ball State, Bowling Green, Buffalo, Central Michigan, Eastern Michigan, Kent State, Massachusetts, Miami (Ohio), Ohio, Northern Illinois, Toledo, Western Michigan.
BIG WEST/WAC/MOUNTAIN WEST
1996 (Big West, 6): Boise State, Idaho, Nevada, New Mexico State, North Texas, Utah State.
1996 (WAC, 16): Air Force, BYU, Colorado State, Fresno State, Hawaii, New Mexico, Rice, San Diego State, San Jose State, SMU, TCU, Tulsa, UNLV, Utah, UTEP, Wyoming.
2024 (MWC, 12): Air Force, Boise State, Colorado State, Fresno State, Hawaii, Nevada, New Mexico, San Diego State, San Jose State, UNLV, Utah State, Wyoming.
2026 (MWC, 10): Air Force, UC Davis (non football), Grand Canyon (basketball), Hawaii, Nevada, New Mexico, San Jose State, UNLV, UTEP, Wyoming.
SUN BELT
2001 (7, first season): Arkansas State, Idaho, Louisiana-Lafayette, Louisiana-Monroe, Middle Tennessee State, New Mexico State, North Texas.
2024 (14): Appalachian State, Arkansas State, Coastal Carolina, Georgia Southern, Georgia State, James Madison, Louisiana-Lafayette, Louisiana-Monroe, Marshall, Old Dominion, South Alabama, Southern Mississippi, Texas State, Troy.
INDEPENDENTS
1996 (11): Arkansas State, Army, Central Florida, East Carolina, Louisiana-Lafayette, Louisiana-Monroe, Louisiana Tech, Navy, Northern Illinois, Notre Dame, UAB.
2023 (4): Army, Connecticut, Massachusetts, Notre Dame.
2024 (3): Connecticut, Massachusetts, Notre Dame.
2025 (2): Connecticut, Notre Dame.
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