Wondering why the schools networks are locked down soooooo tight.
The ones that do this on networks that ARE NOT theirs, are the ones who make it difficult for everyone else. You have the knowledge to bypass some security- great. If you applied that knowledge at the proper place and time, it would be benificial for you, as well as someone else- and you probably would even get paid good to do it.
Knowing a password that is not yours is not illegal. Using it is. And if you know it, guess what- yeah OK.
IMO, this thread fits in with "The system admin has a password on the BIOS, how do I get into it to change something?" It's there for a reason. Use your talent wisely.