I graduated in 1981, though it seems like 1881 sometimes. I was able to bring a gun to school, for a classroom demonstration, that didn't turn out well for the guy that asked me to be the 'gunman' for his karate demonstration. He thought he'd kick my Colt Trooper (with blanks in it) out of my hand.
I had to check it in with the principal, who accompanied me to the class, and stayed to watch. So The Karate Kid squares off, and I assume the 'dumb criminal gunholder' pose. He starts a roundhouse kick (last move I would have used!) that he telegraphed way before he started. I stepped back with my right foot, brought the gun to my right hip, and fired a blank he did not know was in it! I then turned to the class and said, "That is how NOT to disarm someone!. It should only be attempted by someone who has been professionally trained to do so." I did not add that I had been; my Dad (a cop) and I worked on disarming and retention often back then. The Karate Kid turned a deep shade of crimson, and hated me for quite some time.
I also brought my compound bow to gym, and did so in college, too. By then I had a competition bow and my biggest problem was not robin hooding my arrows; there were no 5 spots back then.
I made a fully functional .22 LR 'cannon', complete with breech block, in metal shop. I got a B on it, but wasn't allowed to keep it.