"So I don't know what the right answer is. I think a minimal step in the right direction is to encourage people who use computers for other things than work to

"So I don't know what the right answer is. I think a minimal step in the right direction is to encourage people who use computers for other things than work to sit towards the back, and encourage those who want to pay attention to sit towards the front. That said, second-hand distraction is reduced (you can't see the screen of someone sitting behind you) and the teacher is motivated by what they see in the front row." Totally agree with you - that's basically what I came up with, too. Screens to the back seems like an easy enough guideline to follow.