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A teachers union says it’s fed up with social media’s impact on students
(www.nbcnews.com)
This is a most excellent place for technology news and articles.
I went to high school before smartphones were really a thing (pre-iPhone) and we weren't allowed to have phones during the school day. It seemed reasonable at the time, but it's probably harder to pry phones out of high schoolers' hands these days.
Also, at least as the US goes, it might be a bad idea - take ways away from students to sound the alarm about a school shooter...