2 years ago I was called down to the office for hacking.
What they really got me for was playing a flash game.
What they didn't get me for (and still haven't) accessing the C drives of the schools computers or recording network information, modifying the administrator client program, or completely undermining the block on the command prompt by using "cmd /k" (The "block" is hardly a block at all). Our IT department consists of one guy who looks at the half-broken computer lab, sips his coffee, and says "eh, I'll do it later".