A bit of chatter here about "it eventually catches up to people anyway" that I think misses the point. You want people to learn when the stakes are low. This is better for them, and it's better for all of us. School should gradually go from low stakes to higher stakes, not be a low-stakes zone the whole time that then tosses people into the real world. Otherwise you're presented with terrible choices like expelling a…
...or believe they are.
...or are made to believe they are.
...or are given so much pointless BS to do that even though they're not, they are.