My children attended a HS that had never had a student graduate with a 4.0 (unweighted)GPA. Even the kid that had perfect scores on the ACT, SAT, and a dozen APs did not have a 4.0 at this school. This was not clearly explained in the profile. The senior class averages about 50 students, and usually has 5-9 NMFs. It is not uncommon for NMFs with ACT scores above 32 to not be in the top 10% of their graduating class, since the top 10% is generally just 5 students. And as mentioned by @IABooks, the school began very small weighting of some courses part of the way through my kids’ attendance, but this was not explained in the profile.