Put off boss or not?

I'm quitting so I can go back to school. THANK GOD!!! I HATE my boss with a pion! she's the boss you hope you don't get, and I have her. she talks and treats me like I'm stupid. very rude. she'll holler at me and motion for me to come with this dirty look on her face. I have no problems with people doing this when I'm walking by, but to holler across our part of the factory and get mad when I don't come because I can't hear is ridiculous! what should I tell her on my last day? give me tips!