I'm not sure if they consider it at that level. At primary/secondary school it's pretty clear - you may get told off for bullying if anyone learns about it, may have some uncomfortable conversations. But you'll still be in the same class with the same people the next day. Unless you do something so drastic you get expelled.

I've not heard of many teens (I'm sure there's a few) actively thinking of / planning bullying. Most of it is on a "why not, that's what I want to do now" level. The ones I've seen were actually kids on the very bottom of any hierarchy just acting out, not trying to achieve anything.