Calculator Wizard
I used to sit in math classes and write programs into the calculator for whatever it was we were learning. It helped me remember the formulas, but also meant I was 100% correct.
My teacher didn’t like this for a quiz, so she gave me her own calculator to use. I remembered what the formula was and typed up the same program.
I finished second or third in my class, and when I was asked where my work was, I showed her I wrote up the same app from memory. I got a hundred on that quiz, and she never questioned me understanding the material again.
It didn’t hurt that I wrote some programs that would help my teachers grade exams and stuff. I’m sure my high school still uses those programs. Credit: Reddit/Kenman345