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What happens when a school bans smartphones? A complete transformation | US education | The Guardian
(www.theguardian.com)
This is a most excellent place for technology news and articles.
Definitely depends on the school and where you live, but in my experience the rules have become really loose. Every kid has a phone and mobile data. They're banned in class but kids always try to open their phones to check them and hide them quickly anyways. Many kids spend breaks on their phone. Banning kids from coming into school with phones in their first place is what the article means.