I went to the formal school graduation parties, all of them. Those where you go with suit, parents and students sit on different tables, teachers at others and there is music and that stuff.
But to the external student only parties that are usually hold in a big home of one of the students, yeah I never went to that, to get bullied? No way. I might have had, my geeky friends, which were usually the targets of bullying too apparently had a good time as the bullies chilled off and moderated themselves in the party, I suppose they were too busy kissing girls or whatever.
If there had been such an event in elementary school, I would had gone, I was bullied there too, but I also had reasonably good relationships with virtually everyone and a larger social circle