ive been in situation just like this back in foster care
what i did was inform someone at school and then called a cps worker from there and they scheduled a meeting where i brought up the situation and had to wait it out until court, then i got moved
its more difficult for you since its summer but i understand what youre dealing with, bring it up in a meeting or a court date, but even then that still involves a lot of waiting
if you need someone to talk to personally you can add me on steam