[thinklarge]

I'd also like to add that this may have been a class of students who were in a sign-language class...

I did an experiment similar to this in highschool where we were supposed to go without hearing, sight, or speech for a few days. The specifics are fuzzed but there were a lot of kids walking around with things covering their eyes.

It was a cool little experiment and it sounds like this teacher took it a little further. It also sounds like most good stories that I know, mostly fact but a little fiction in there to spice it up rather than saying... well shit I just don't remember that detail...