The national database lists it as 97%, which ties with Haravrd as the highest among the ivy league. Regardless of if it is 97 or 98%, consider the incoming students. You have an incoming class where most students received a perfect 4.0 GPA in HS. The mean HS GPA is above 3.9 and hardly anyone received below a 3.5. The vast majority of those received such high grades while taking an extremely rigorous schedule of high level courses. Test scores are similarly high with 25th percentile scores of 700+ on all SAT sections and hardly anyone below 600.
In such a class, what percentage of students would you expect to fail out? It’s going to be near 0.