I think the point is all the "kids are getting damaged by phone use" talking points. It's using the school bans as a useful study; we can see what happens to kids if they're not allowed to use phones here.
iirc a similar study on the Aussie age ban is finding similar results; basically no difference. Some kids benefit, others suffer.
iirc a similar study on the Aussie age ban is finding similar results; basically no difference. Some kids benefit, others suffer.
Agree that a study on grades would be useful too