How is computer usage remotely comparable? At my high school we had 2 hours of computer class per week. The rest of the time we spent in regular, computer-less classrooms. We had smartphones already in my days and I promise you they were a major source of distraction for the students even though they were banned.

I cannot imagine I would have bothered to pay attention at all if I could just be scrolling twitter or reddit all day. There's a reason why I block these apps on my own phone during work hours.