As a devoted follower of the Big 12, the term Aggie is a common reference heard in these parts. We are the Aggie conference...T A&M, Oklahoma State (formerly Oklahoma A&M), Kansas State, & Iowa State; & of course there's Texas Tech, known affectionately as the "Aggies of the High Plains".
Aggie does come from the fact that when all these schools were founded they were Agricultural & Mechanical colleges. Sooners everywhere will always refer to Oklahoma State as the Aggies. T A&M has simply taken the name & woven it into the very fabric of their culture. They even have a yell....Fight Farmers Fight.
A little known fact, 2 of these Big 12 schools have among the highest rated Hotel & Restaurant Management schools in the country. Oklahoma State & Iowa State along with Cornell,The University of Houston, & UNLV are all top H & R management schools.
There are probably more veterinarians in the U.S. from Big 12 schools than any other conference....something to fall back on when your cumulative BCS rating sags.
O.U. has the highest rated Meterology school in the country which I have been able to determine has only produced people who, after you come out of the cellar, can say..."Yep, that was a tornado, all right".
Missouri has the highest rated Journalism school so, once again, you have something to thank the Big 12 for....cheap trash can liners.
If you believe U.T. graduates, Texas has the best school in every known academic discipline. I have 3 U.T. graduate children....just ask them.