As many said before the software is NOt illegal. Why? Because may be u want to make ur ..i dont know...graduation, or a song u wrote, into a BT file or P2P file and share it with others for whatever reasons.
Some of the files transfered are legal some are not. That is all.
Why would a school want to deal with this? May be Im not getting something....what, somebody scanned their homework on p2p and teachers are trying to stop them?