Depends on the school.

Life is a bit busy right now with work and family, so I rarely find it convenient to devote more than a single sense to media. If my eyes are busy (driving, running, flossing…), I will listen to documentaries and science shows without video. If my ears are busy (working), I will put videos on my second monitor and mute them.

His wikipedia article is a pretty good read. Had no idea he was so religious.