This exploit is for people that have the classroom.cloud extension. This was found by one of my friends.
- During school, go to the Settings app.
- Go to the "System preferences" section.
- In the Date and Time section, click "Time Zone".
- Change the option from "Set automatically" to "Choose from list".
- Choose a time zone that would be a time that's not school hours. (choose the early times or late times compared to your time)
-> During school hours, the extension will show as "Available".
-> When you are not in school hours, the extension will show as "Out of hours".
-> When "Out of hours", teachers are unable to use the extension to do anything to your Chromebook (such as viewing it or locking it).
-> Since this extension uses your device's clock, changing the time zone can change the status of the extension.
https://chromewebstore.google.com/detail/classroomcloud-student/mpkdoimpgkhjcicmhmlmgboelebflpla
https://chromewebstore.google.com/detail/netsupport-school-student/gcjpefhffmcgplgklffgbebganmhffje?hl=en
S-PScripts | https://github.com/S-PScripts
(not really me but I did the writeup for it)