Texas, aTm, Baylor, Texas Tech, TCU, SMU, Rice, Houston, UNT, UTEP, UTSA, Texas State, Oklahoma. That's 13. LSU and Arkansas are also "sort-of" Texas schools, when it comes to recruiting.
Now don't get me wrong, schools like UNT, UTEP, UTSA, and Texas State, aren't pulling many top recruits from the top tier of football schools in the state, but they do occasionally snag one or two, and it makes an impact.