I had a 5th grade science textbook that had the formula for black powder in it. I guess they figured 5th graders were too stupid to put it to use.
Well, they were wrong. By the time I was in 6th grade me a couple buddies were freakin' experts. We thought we were geniuses until a couple of guys I played baseball with, who were in 7th grade, were making nitro glycerin. They blew out a wall at a lawyers office right next to my house. Needless to say, they got caught and I got to witness a bomb squad remove 14 coffee cans of nitro from my baseball team mates house. Both got sent away for a long time . One I never saw again. The other was in the juvy home until he was 18 and then they put him in the army and sent him to Vietnam . Yeah, in my neighborhood we blew up some stuff.
Rick