I manage the Linux labs at my college campus, but I also maintain the Windows and Distance Learning Center labs from time to time, especially during testing periods. During finals week, this can be incredibly frustrating, since sitting in a lab, watching students take a final is so much more boring than taking the final itself. I’m not even allowed to have a phone.
Most Finals are boring, unrestricted ones, but a few online professional certifications and placement tests are very strict in their requirements. How we set up for these tests is to boot the computer into a temporary Live OS, which does not save any settings, and automatically opens Firefox full screen in Incognito mode.
Firefox is the only thing that is allowed to run, and if the window closes, the computer reboots, resetting the OS back to defaults. If the user leaves the page set by the test taker, the browser closes. If they open a terminal or other program not allowed by that test (like a calculator) then the system is locked until a proctor (usually me) unlocks the screen.