Hide the stats bar. There's an arrow.
Hello!
Actually It's pretty complicated all you do need to change rule at school in board meeting. Her influence doesn't like every teacher. Her influence increase when she learn new technique from punish student. Too open new technique you need to change rule school, like you can open girl panties, etc.
If you find difficulties to change school's rule. Try increase discipline stat. When you get enough dicipline you can change the rule in board meeting.
I hope that help you