My high school graduation class has over 800 students, 64 of them scored full score 1600 in SAT. Our junior class is even stronger, this past August SAT alone there were 29 full scores. They literally haven’t started their 11th grade yet.
Past few years we had several SAT full scores with auto-admit could not get to BioMed Engineering or Electrical and Computer Engineering. Many of them opt out of UT and took full ride scholarship from other universities. Texas has over 3200 high schools so UT has to drive good students away because they cannot even take top 0.5% by the numbers.