Hello! After reviewing the previous threads, it does seem to be pretty selective. Unfortunately, I am not sure about specific site acceptance rates (I wish I knew). I have seen that about 40 applicants get into Dallas and Austin. I believe the other sites vary between 15-20.
At this point, I am completing the courses that are prereqs for multiple colleges. I am considering completing the longer prereqs (CNA) after I (hopefully) receive admission.
Good luck!