Shutting down programs via school

All these school restrictions remind me of the times where I had to deal with a program called DeepFreeze, which effectively sandboxed the system. Nothing you did on the computer saved. It would simply revert to the point where the system was "frozen" each time you boot up. It was a relatively low-level program, mildly annoying to deal with without administrator privileges. Fortunately, the program didn't run at a low enough level. I was able to boot into their (unprotected!) BIOS boot menu and boot into my Linux USB. It took me the whole day to find out how to unfreeze it, but it ended up being a hidden system directory on the root of the OS drive. If you're able to do something like that, you'd be golden (you just can't really revert the changes unless you have access to the software).