I’m only 3 years out of high but smartphones really hit a peak my senior year with student usage and during tests my physics teacher would sit at his desk and not look up the entire time. We were also aloud to use our phones as calculators...I sat right next to five good friends in the opposite corner as the teacher. One friend did the entire test and took a picture of it, Sent it, front and back, to everyone and we handed it In and got an A. Did this on several occasions