Our protagonist used to be on top, but they tore her to shreds. You might not be able to redeem your status, but you can make them hurt, the way they hurt you.
Daddy's little princess seems to think that since her father runs the school board, she should run the school. Her attempts to befriend you for your status didn't work, so she took your crown by force.
The school slut dragged you down to her level, spreading rumors implying that you were every bit as promiscuious as she is.
This two-faced brat was supposed to be your friend, but she sold out and told Tomiko everything she needed to take you down.