I had an almost opposite scenario to this happen to me in middle school.

I was done of my classwork for the day, so I was playing games on my iPod Touch. Teacher notices it, confiscates it, and tells me I can get it back at the end of the day at the front office. Not so much getting an earful, just trying to get me to focus.

At the end of the day, I go to pick it up and the teacher says “I didn’t realize this wasn’t a phone. I would’ve let you keep it if I’d known”