What I’ve heard from the HS alums and relatives who are HYP alums is a bit more nuanced. While it’s hard to get an A…one has to go out of their way to get a B or less.
One older HS classmate(HYP STEM graduate) joked for him to get a B/C/D/F level grades, he’d have to literally kick the Profs in their respective posteriors and set their pants on fire.