St. Charles East High School Principal Bill Richter shows how the school will use phone caddies for cellphones. John Starks/jstarks@dailyherald.com

Some suburban students will be welcomed back to school with new procedures to help quiet cellphone distractions in the classroom.

As experts continue to warn about harmful effects of cellphones and social media, educators are finding ways to limit access during the school day.

In St. Charles Unit District 303, for example, a district-wide procedure will help clarify expectations. High School students will be asked to silence their smartphones and place them in phone caddies at the start of each class.

Middle school students will be told to power down smartphones and other devices, such as smartwatches, and put them in their lockers for the

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