Doesn’t matter if the teacher is an absolute gem and knows how to captivate kids who want to learn. Most kids prefer the dopamine hit from social media and other phone usage compared to actually learning. It just ruins it for kids who actually want to learn.

You could be in the finest school in the world and the phone would still win.

Also, France started doing this a few years ago already and has seen improvement across every metric. Better grades, more socializing, 80% less bullying, less anxious kids. They only downside they found? Parents complaining they were unable to call the kids at any moment.