He might want to look into UF. GPAs of 4.4-4.6
I’ve mostly seen colleges using weighted gpas to award merit in the south like UAlabama. Miami University in Oxford, OH uses a weighted gpa and Indiana University also considers the weighted gpa for admissions and scholarships.
Our hs awards 3.7 for an A- regardless of level, but those students still do well when they’ve taken rigorous courses. It’s possible that as admissions reviews his transcript he’ll end up in a higher tier of merit than he expects.