indeed, this could mean anything, i got sent to the principal one time for having a windows dos command prompt open, no joke

Apparently it was actually a rule in the rulebook that you arent allowed to use the command line because you can do 'great damage'. On most computers it was disabled, but this was computer science class and we wrote console applications in c++ (through visual studio ide) so it had to be enabled.

They called my mom, who isn't very computer savvy, and told her that I was 'hacking'. She was so mad at me. I got 1 detention and had to write a handwritten note of apology. It was a pretty bad experience overall.

I'll see your DOS prompt and match you a "changed the desktop background and inverted the screen colors" trip to the principles office.

They wanted to suspend me for two days for that one. Happily, I was able to get another teacher to talk to the principal and explain that computers is "his thing" and that just because it was possible that I knew how to do something doesn't mean that I did do it.

In fairness to your otherwise overly twitchy school administration, it is in fact possible for dumb people with just enough DOS knowledge to screw up a standard PC build from the command line, enough to require a rebuild.