When a teacher goes to the AP for help that teacher should get help, not told what a bad teacher s/he is. The teacher should not be abused because the student cursed him/her out.
I never go to the AP of my department and advise others to stay away as well. I either handle problems myself or find someone else who is willing and capable of helping. This is not the proper but it is the only thing thing to do . Most teachers follow proper channels.
Teaching some kids is a very trying experience. Admins are supposed to be around to help, not to hurt.