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> > Could they collect every phone before school and hand them out after? Sure.. but that's a nightmare.

Yes they could for years NYC schools banned cellphones in schools which ment kids could not bring them in the building at all. Kids left their phones with nearby bodegas or in a van parked outside the school for a small fee. Basically a coat check for phones. This worked perfectly well and required zero effort on the part of the administration.






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