I am sorry to hear what happened to you.

What will be your option now? Can you secure a new job, perhaps at a better school?
The "school" you have worked for until now must be what we call a "crap, pretend 'school'" here.
GAC is a big business and cheat, and you are a decent teacher not wanting to form part of it.

Have you ever considered working for a decent (state-run) middle school or uni/college? I would highly recommend to look into that option; you might be better off then in terms of conditions and job security.

I wish you well, good luck!