SEATTLE — Seattle Public Schools’ new cellphone ban took effect Monday for K-12 students, expanding and standardizing rules that many schools in the district already had in place.
District leaders said research shows that when phones are put away, schools see better focus and fewer disruptions.
Under the policy, students are divided into two broad groups — kindergarten through eighth grade and ninth through 12th grade — with each grade level able to set specific expectations that meet students’ needs. The policy was developed after a pilot run at five schools across the district…