Today is half day but only for the students. The teachers have to stay for meetings. That’s totally unfair. How can I get out of it?

So when they announced that it was half day which is today I was excited until the assistant staff said teachers and staff are required to work a full day and have a meeting with our teem after the kids leave and still take a lunch break. It’s mandatory. When we all got that you know yesterday, I was bummed. One of the coworkers was right. So Wednesday she said it’s half day Friday which is today. I was excited and happy and so was she. I said we’re getting out early. She said, “Well the STUDENTS, some stay for aftercare, do but I don’t know about us. We have a meeting so we still have to work a full day.”
I told her, “Are you serious? We will have to work a full day?” Then she said, “We’ll that’s how it is, us staff stay behind and work and have meetings. Well, teachers stay longer but still. Hopefully they’ll let us out a little earlier.”
Today is Friday and I’m still happy it is but I gotta get out of staying until 3:30.
We (assistant teachers/behavior coaches) usually clock out at 3:00, but today we have a staff meeting from 1:00-3:30pm.
The teachers have to say until like four or 4:30pm. Man I’m jealous of the students. I’m one of the assistant teachers. I’m 19 going on 20! I have a life too you know!