I was a teacher here in Mid-Del & OKC public schools for a few years in the mid-2000's Don't think it would be possible to get approval, then or now.In 1992, as a 5th grader in a gifted and talented class, we had to do a presentation and demonstration. I did mine over safety and function of firearms with an sks, 870, 1873 Winchester, Remington 700, and a Colt frontier scout. I got approval ahead of time and got my mom to bring them and take them when I was finished. Got an A+. Imagine a kid trying that today.
I would have tried, if one of the kids asked...