at certain schools, the security system on computers is quasi non-existent. In hi school, they forced people to login before using computers (which would allow people to install stuff, browse every websites except downloading zip files and change other settings) and the password was the same everywhere (everyone in comp classes got told the password by the teacher). The final year, there weren't anymore password prompt, except zip files still gave 403 forbidden.
The only security thing we had and no one knew how to bypass it was that when turning the computer back on, the entire harddrive content got reverted back to what it was before you used the computer so if you uninstalled/installed stuff, accidentally saved your projects/images on the C:\\ drive instead of the
\\ one or changed parameters, then these were all lost/reverted back upon computer reboot