All student knows

*spongebob voice* "that's not the only thing that WON'T WORK!" *glares at squidward*

Teachers and a students need to go to the bathroom

I don't know I think it depends on the teacher. Granted I majored in Music and took several business courses so audio systems were kinda necessary as well as PC's. But you if you meant a PA system then yeah I can't recall that ever working for a teacher.

Just, teachers

I was always the tech guy for my teachers. I did it so often, whenever there was a problem in class, my classmates just stared at me until I stood up and did something.

my French teacher literally calls me IT support

And teachers with VCRs or DVD players.