How do I remove the controls from a school Chromebook

I want to open up linux terminal on chromeOS but "admin" wont let me do it. this is bullshit... how do I take off some of the restrictions without completely shutting down my computer from the "big brother" system because I dont want to get caught. I dont want it to go dark from the school network but I want it to still be a bit more free. if you have any github links or anything I shoudl try please help me out.