>Students can be trusted to obey a simple "no phones in class" rule.

I'm honestly not educated on the topic right now since I haven't been in school for 15 years and have some time left before my daughter starts, but is this rule really not in place in most schools? How could any school justify not having this rule at the very least, regardless of how well-enforced it is?

I always assumed it was a lack of enforcement due to understaffing that was the problem