My students are saying a teacher on my team has been making fun of me and saying negative things about my teaching. At first I didn't believe them because some students do that just to get under your skin. Then last week they said the teacher called me a 'career changer' and that rang a bell because I did tell her that during in-service. Personally, I find her a pleasant person to be around but not warm and fuzzy. She never smiles when she passes me in the hallways. But this comment from the kids has me thinking I can't trust her anymore. I don't want to cause a confrontation right now, but I need some proof that she is bad-mouthing me.