Texas and Oklahoma have informed the Big 12 that they intend to leave the league, setting off what is likely to be a jolting realignment of the sport in which powerful schools position themselves to jump from one conference to another in search of bigger paydays and more prestigious opponents. 

The schools, which have called the Big 12 home since 1996, said in a joint statement Monday that they intend to remain in the conference until its current media rights deal expires in 2025. They are reportedly eyeing a landing spot in the Southeastern Conference, where they would join forces with the likes of Alabama, Louisiana State and Georgia and turn the SEC into a 16-school “super-conference” further poised to dominate the top tier of Division I football.