It's about time.
Three years ago I visited a teacher friend's classroom. I was taken aback by the number of students who stood at the room's outer limits to stare off their phones.
A counteracting student body clustered about the teacher at the front as he demonstrated a lighting setup. Good for them. As they were film production students who were paying for their college education, it made perfect sense that they would make a postured effort to learn.
As for the phone stare bears, they were off tending to more important business.
(Note: The ban will take place starting next year in public schools. Those paying good money to not learn in post-secondary institutions have no need to worry.)