Fwiw, my local public school district (I have three kids at three different public neighborhood schools) does provide kids instruction like this, as well as lot

Fwiw, my local public school district (I have three kids at three different public neighborhood schools) does provide kids instruction like this, as well as lots of other programming around empathy, acceptance, drug/alcohol use, common health/physiology topics, driver training, etc. This is my tax dollars being spent on things that aren't core academic topics but imho absolutely help develop youth into better decision makers with a more holistic view of society than many of them might otherwise given their home situations. The middle and high schools here ban phone use during class, and the high school confiscates phones (and grants detentions) for students who flaunt the ban. In practice, it usually works with teachers using those door mounted phone holders as a way to take attendance. Put your phone in the pouch when you get to class, and grab it when you leave. Occasionally, a teacher will also ban smartwatches if they become too distracting, but this is not common. That said, many teachers take advantage of their students having phones to augment their methods & curriculum, and afaik this is the teachers' prerogative.