Yeah, I think this varies too much between schools. Our average on block exams was almost always around 82%-83%, with the majority of the class getting Bs, around a dozen each As and Cs, and a handful of Fs. If you raised the cut-off for passing a LOT of people would have ended up remediating-- but last I heard our class had a 99% COMLEX pass rate, and of the 2/3 or so of the class who took USMLE everyone passed. (These are not the official end numbers, because I don't know those. If it eventually comes out that our pass rate wasn't quite that high, don't come after me)
My school makes students with a <3.0 GPA attend some review lectures at the end of spring second semester, and <2.5 GPA students or anyone who fails something second year is designated considered at higher risk for failing and has to delay boards a few weeks for extra study time. I'm not sure what wizard math actually generated those numbers, but they seem like they're working, but obviously they're only internally validated since grade distributions would vary by school.