Authority = responsibility, only fair
If the bully can be suspended for actions off school property, then the bully's victim can sue the school too
I actually learned all this the hard way. A teacher backed out her driveway and nearly crashed into me on the road leading to school. I drove past and flipped her off. Well i didn't know who she was (i probly woulda done it anyway), and as i parked she pulls up behind me and screams "You're outta here!" I still didn't know her (special ed teacher)
Of course got summoned to the principal. My case was it was off school property, they showed me the student handbook (which i never read) where it said even on vacation ------- I laughed, said that's outrageous, and they can try pursue it so long as they do the same to her for nearly running me over and i might even hold the school responsible for the trauma.
That was the end of that.