LA just banned over 429,000 students from using phones and social media during the entire school day.
The school board voted 5-2 to develop this strict new policy within 120 days.
Supporters say it'll help kids focus, boost academics, and protect their mental health.
California's governor is on board, citing concerns over social media's impact on youth mental health.
But one board member worried the ban would be too restrictive for students.
Another question who's actually going to enforce being the "phone police" all day long.
There are concerns over student safety, communication with parents, and personal device ownership.
A middle school that already banned phones saw improvements to the learning environment.
A growing number of states and districts are implementing similar classroom phone bans amid addiction and distraction worries.