I bet she has tenure, too. ugh. Public schools do that. I had this kind of teacher too, though it was for middle school, so it didn't matter as much. First words: "I'm just here so I can put it on my resume." It all went downhill from there. Good luck on your paper.
on a side note, I'd say, if your parents are willing to phone in to excuse you from the last day of school, not going to the last day of school is actually the best last day of school.
Human history is the story of complaisance. While disaster is fresh in our memory, we take precautions. But as the memory of disaster recedes, we start to take risks.