Because Your So Curious To Chat With This, Here:

Bullies Are: Friendo, Petey(Polite Bully)

Nerds Are: Timmy And Petunia

In Rest, All Weird Students: Petey, Friendo, Stanley, Chloe's Dad, Eugene, Tommy, Billy, Chad's Killer, Gale, Petunia And Woman Stalker

Normal Students: Parker, Chester, Ronnie And Chad. (Consider Chad The Least Meanest, While Ronnie Can Get A Bit Hostile)