Where in the south? West Texas a&m, Tulane, Baylor, Texas tech, a college in El Reno, Oklahoma, that I can't remember the name of, North Central Texas College (where I went), and a few more were all in the IHSA zone I competed in.
a lot of colleges have equestrian teams, especially if they have an agricultural department! you just have to stalk different colleges's website! if all else fails try emailing them if you see a college you REALLY like and don't know (or find the page) if/ to their equestrian team!❤️ hope this helps!