I would do the factory reset again and then not use that account anymore. If you want, you can create a new local-only account and then (this is the important part) sign in to the school Google Classroom on another browser. Install Firefox, Brave, something, and use it for the school account rather than Chrome. Chrome allows extensions installed to it to run in the background and manage the system, but another browser cannot.
Good suggestion. If the school is requiring your child to have the chromebook, then they should pay for the thing. They don't have the right to infect any device that your child happens to log in with. So factory reset, don't log in. Then when the school complains that the child is not completing the assignments, tell them that he/she cannot do them unless the school issues a school-owned device.
A better move would be to get your child out of Chicago public schools altogether.
CPS does pay for the thing. OP wanted their child to use a fancier device and they're mad that it falls under CPS' MDM policy. Go get a free device from CPS, take good care of it, and return it once the child graduates.
i don't think you can. I had one of these chromebooks too, which I paid for. But my school did not want to remove the 'school policy' so now it's locked and even
other accounts are 'watched' and managed by the school's policy. Last time I tried to create an account it wouldn't let you create it unless you provided an email.
Ah. This makes sense. In this case, I think a throwaway or a personal account will perform the same function, as long as it is not affiliated with the school system.