This is the best summary I could come up with:

Around the country, educators say students routinely send Snapchat messages in class, listen to music and shop online, among countless other examples of how smartphones distract from teaching and learning.

Those days are gone,” said James Granger, who requires students in his science classes at a Los Angeles-area high school to place their phones in “a cellphone cubby” with numbered slots.

A growing number of leaders at the state and federal levels have begun endorsing school cellphone bans and suggesting new ways to curb access to the devices.

A law that took effect in July requires all Florida public schools to ban student cellphone use during class time and block access to social media on district Wi-Fi.

And two U.S. senators — Tom Cotton, an Arkansas Republican, and Tim Kaine, a Virginia Democrat — introduced legislation in December that would require a federal study on the effects of cellphone use in schools on students’ mental health and academic performance.

“If the bookbag is on the floor next to them, it’s buzzing and distracting, and they have the temptation to want to check it,” said Kim Whitman, a co-founder of the group, which advises schools to require phones be turned off and locked away all day.

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