PHONES AWAY: Students and teachers routinely ignore New York City's ban on cellphones on school grounds. But the policy affects students disproportionately--especially those at the 87 schools with metal detectors. These schools often have higher percentages of black and Latino students, the audience that edtech advocates see as most likely to benefit from engaging with technology in the classroom. According to The Atlantic, Mayor de Blasio hopes to lift the cellphone ban, largely due to safety concerns about students communicating with families in the event of school emergencies.