2 questions about my chromebook

I have a chromebook that is enrolled in a school (I dont have to give it back to the school its not stolen) is there a way to unenroll it? Question 2 if I am able to unenroll it can it have linux/windows installed on it it is a tlc nl72tw and on the docs it says nl72t is supported but is the nl72tw?

If your board name is on the list of supported devices, it’s supported.

You can flash the firmware manually using a ch341a programmer and/or there is info out there on the internet on how to unenroll Chromebooks.