NBC NewsA California high school found students' cellphones too distracting, so they're locking the devices upAug 20, 2019Safia Samee AliBy Safia Samee Alimore_vert
KGO-TVSan Mateo High School goes phone-free, largest public school in the country to do itAug 19, 2019Kris ReyesBy Kris Reyesmore_vert