I must have gone to a great high school. I actually hacked our systems a few times.

We used a piece of software to lock down the PCs, IIRC, called Fool Proof. I'm not sure if it was supposed to be ironic, because it didn't take long to figure out that it kept the clear text admin password in swap. The machines didn't have BIOS passwords, so it was pretty easy to boot into a hex editor and dig it out.

When my teacher found out I did this, he praised my ingenuity and even got me involved in vetting alternative options, despite the fact that I had been handing the password around to friends like candy.