150
Why Schools Are Racing to Ban Student Phones
(calckey.world)
This is a most excellent place for technology news and articles.
Seems to be a combination of students too distracted playing on their phones and difficulty policing behavior on social media bleeding into school time. They give an example of students filming a student being bullied on school grounds and the video being uploaded and shared on social media. I'm not sure banning smart phones during school hours is the right solution, but it's certainly a tricky problem to deal with.