I'd assumed the instructor renewal class would be at the DPS range in Florence. They have a large class room there. Not sure of the capacity but I think it is 100+.
However, they may hold classes in Georgetown. They have used one of the motels right off i35 and have used a large meeting room in Pflugerville.
Just as a history lesson for new instructors, When the CHL was first created, there were 2 classes. Most of us took a 40 hour class (I took it twice. :) ) but IFF you could show that you regularly taught handgun classes, you could skip the 'lesson plan' part and only stay for 24 hours (not sure of the exact time, but got to leave around Wednesday afternoon. That exemption may have included the NRA certificate, not sure. I think I had it then but I never took advantage of it.
Several years ago, DPS started requiring all applicants (new and renewals to have NRA certs or equivalent. The no longer have 40 hour classes for new LTC instructors.
I understand that they might want you to keep up with standards, However, as we all know, all it takes to keep the NRA ticket is pay their fee. (There is some talk of requiring one to submit a class registration, but we could 'register' one of our LTC classes and meet that requirement.) I know that some people like to keep their instructor classification (for training/certifying family? friends? status???) and never teach, never plan to. However, I think anyone that has taught LTC classes would meet the 'regularly teaches handgun...' standard.
I note that teacher instructor candidates had to have taught 4 classes in the preceding year, (and absurdly minimal standard). I think they should have ranked instructors by the number of classes/number of students and trained the most experienced first. :)