Originally Posted by
Ambaryerno
As others have said, the problem isn't the CONCEPT so much as it is the EXECUTION.
Certain characters have no business being in front of a classroom, at least as a full-time job (I could see Logan being a guest lecturer in a history class, for instance, but never a permanent faculty member). The sliding timescale makes this even more problematic because you have characters aging at uneven rates (X-23 is now apparently roughly the same age as some of the New Mutants) or being outright frozen in time, leading to teachers instructing kids who may only be a couple years younger than themselves (there's certainly young teachers out there, but rarely THAT young).
My vision would be no sliding timescale. SOME characters become teachers at the school when they retire from the field, while others go on to occupations outside the school, but could still contribute in other ways.