one of the report’s authors, said it would be wrong for policymakers to see the results as a reason to shy away from restrictions.

“One of the concerns I have about this study is that it might encourage people to walk away from phone bans as a compelling reform. And I think that would be a major mistake

The study very specifically says "average effects on test scores are consistently close to zero.”

Little effect on test scores is VERY different to no positive effect and at least one author of the study is still strongly in favour of phone bans.