Yea, my sim got demoted and went back to level two of her job. I don't think it's even worth it, she went to prom solo, and on top of that, she lost Prom Queen to the "mean" girl.
But to make things worse, that teen's family is extremely poor, and her family currently has 5 simoleans.
I had a strange glitch happen. A girl went the prom with a boy, and then I got a pop up that said "Congradulations! Mary and Paul are now engaged! You can throw them a wedding party, or if your more intimate blah blah." I checked their relationship status, and it said that they were engaged! My god, way to make me freak out, Sims 3!