When I started Algebra, graphing calculators were brand new, so calculators weren't really a thing. I would imagine we would have been allowed to use calculators if I was studying Trigonometry in the '80s, since slide rules were antiquated.
I’m not so great at math, so I get where it comes from, but I’m with you. Showing your work is a prelude to Algebra and the general use of equations and formulas; after that it doesn’t make any real sense. Most calculations are performed using visualization either wholly or in part: having to write down every step tends to interfere with that process.
Ima answer for Ghosty.
He absolutely would not because he’s a gentleman who values the comfort of his companion for the evening. He’ll at least give her the courtesy of a spritz of moonshine in her dainty parts and a line of cocaine before proceeding to her pooper.
I have no idea what rallies you think these parents are taking their kids to, but if child endangerment is a possibility then those kids are already royally fucked. So I say take them and let nature take its course.