Recently, GoGuardian published this interesting analysis of YouTube usage over a sample set of a few hundred schools. Its well worth a read, just to see how the younger crowd views computers in general and YouTube in particular.
Side note: If you use Chromebooks (or their desktop cousins, Chromeboxes) and haven't heard of GoGuardian, you should give them a look. It might not fit your institution's needs, but they have interesting enough features that they could be useful.
