Using this simple method you can stop those annoying teachers from spying on what you are doing from their computer without using any hotkeys or anything of that matter.
Step 1: Work out what your school computers have
In this step you need to find out what your school has on your computer that it uses to track what you do. My school uses a program called lanschool, it has a teacher and student application running on the either of the computers respectively.
Step 2: Download a portable task manager
If your school is smart, they would have disabled the windows task manager. so, we will get our own!
I've found that process explorer
download and put a task manager onto your USB thumb drive and its locked and loaded to stop those teachers at school.
Step 3: Fire the torpedos!
In this step you need to be quick so that the teacher or anyone else for that matter doesnt see what you are doing
first you will need to find out what the name of the application running on your computer which monitors your computer is. If you found this out earlier you would be smart to do so. for lanschool it should be student.exe, most of the programs will have an exe extension
Next you need to SUSPEND the process, if you kill it, it will most likely just restart itself like lanschool does.
Step 4: Finito
There you go, now your screen is just garbled to your teacher, of course all this does is make it so that the program is non responsive so that doesnt stop the teacher from seeing this garbled junk that your screen once was. Of course this wont get rid of the internet blocker, but it will get rid of the history cheaker on lanschool
have fun, just dont be stupid about it ok?