This is a tool to edit managed network configurations to block updates, change the DNS and proxy settings, even if its greyed out in the settings dont let me know if something isnt working and I might fix it here is the latest update:
https://gist.github.com/WaveDemure/bc2e24eee5e22b3ef083afa8bfb6a638 or
https://mega.nz/file/I7MRVA4C#d3cjIyQLz6iSd_D_BPCekprMjfzDk8aTOAKcitupqPw
or https://github.com/StarRepo444/caub-dns-Prox/releases/tag/edit
if these are both blocked download it on a pc and upload it to your school accout google drive