My school’s faculty didn’t give a damn if we played games during breaks, just not during class.
I played anything and everything - Final Fantasy, Zelda 2, Jam Sessions, Animal Crossing, Metroid Prime Hunters, hell when I learned about PSP softmodding most of my research on it was done at school during lunch or spares. Teachers never looked at me twice.
That said, they did start raising eyebrows when I used a live CD of Linux to bypass all of their content filters….