The Big 12 presidents have directed Commissioner Bob Bowlsby to evaluate schools that are interested in joining the conference, stopping just short of announcing it was committed to expansion.

After a meeting of the Big 12 university presidents and chancellors on Tuesday, Oklahoma President David Boren says the conference is still considering whether to add two or four teams to its 10 members.

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The Big 12 has been a 10-team conference, the smallest of the Power Five leagues, since 2012. The conference has already announced it would bring back its football championship game in 2017 and likely break into divisions.

Numerous schools have been pitching the Big 12 behind the scenes for months, including much of the American Athletic Conference along with BYU, Colorado State and others.