Shifting? My cousin used to take a knife to school for protection and this was back in the ‘80s in the Florida Panhandle. I suspect the MSM just didn’t bother much about reporting knife attack stories, except locally.
I wore a Buck Folding Hunter on my belt every day during high school. Nobody was stabbed the whole time.
I used to carry a Buck 110 in high school, I loosened it up so it would gravity open. I never stabbed my classmates though. The only one that ever got hurt with it was my guidance counselor when he wanted to look at it and messed up trying to close it and sliced his hand.