I was in high school in the late 90's and I carried as SAK through out most of it. It was against the rules, but it was a bit before the whole zero tolerance BS as well. I used in mostly in my shop/tech classes. Certainly not every day, and I was careful who was around when I took it out. In English class, we were reading a book, "The Things They Carried" which is about the Vietnam War and what soldiers remembered about what they had over there. We had to write an essay one day about what we carried every day. I wrote about my knife along with everything else. The teacher pointed out my essay as being one of the strongest ones he had received, and went on to read a bit off from it, including a part about my knife. He then asked me if I had it on me right now, I was pretty scared because I figured I was going to get in trouble. I told him (and the entire classroom of students) that I did, and he even asked to see it. So I took it out of my pocket. Nothing happened and I never did get in trouble, luckily. But if I was back there today, I think my choice would be different, with all that has happened, and the rules and views of society, I don't think I risk my education just to carry.