They had multiple academic advisors for every team, as well as the academic/tutoring center in the SAB. One-on-one tutors available for student athletes for any class they could need, student-athlete review sessions and practice exam environments, and academic counseling. You could get pretty much anything you needed in the SAB, including that essentially unlimited one-on-one tutoring, scheduled as often as an athlete might need it to do well in their classes. If a student wasn't motivated or willing to work though, and had to have coaches breathing down their necks or having to hold their hands to get them to classes - those were the ones who most often got in trouble academically, and that was hard to fix.
I'm sure Utah and the P5 schools have some pretty impressive resources for academic support, and probably are a notch above BYU, but I was pretty impressed with BYU's.