I used to have a real nice SAK, this was when I was in high school between '98 and '01- and I brought it to school even though it was probably against their policies. Actually I knew it was strictly against the rules but that knife was so dang handy.
So anyway in '02, a mentally disturbed 9th grader scrawls a bomb threat on the inside of a bathroom. Now they knew who did it, and they arrested him and stuff, and we all knew he couldn't really bomb the school, but Principal D-ickless decides, lets have a MEDIA EVENT. So they bring in these metal detectors for the front doors, and man them with volunteers to search bags (old nosy women) and also to watch students going to the bathroom. Because, you know, that will prevent them from writing copycat bomb threats at all since the last one was in the bathroom.
So I show up and there is a line and I see metal detectors and old women sticking their noses into backpacks. I take my knife and drop it behind a tree in the wooded area next to the school, and cover it with a few leaves. Never saw it again... dang thing was only 2 years old... then I graduated from that freaking place and upgraded to a Kershaw Scallion...