At my high school, I actually enjoyed the filter. Everyone thought I was a loving 1337 h4x0r because I could bypass it with Tor since the IT guys didn't give a stuff. The only reason they added the filter was because my IPT class was hilarious and bludged constantly.
At my college, the filter is fairly free, since art students need to regularly tap many, *ahem* creative sources. That said, I haven't completely verified yet, but it seems as though you get booted off the network for about 10 minutes if you attempt to use a P2P client (specifically torrent programs).