schooling in a pandemic September 15, 2021 4:43 pm COVID Outbreaks Close Some Schools in Philadelphia Three Philadelphia schools have already closed and returned to virtual learning due to COVID outbreaks. NBC10’s Stephanía Jiménez has the details. US & World Videos 1:30 Mask Mandate Returns to Philly Public Schools, for Now 0:32 Students in Philly, Camden Public Schools Must Mask to Start 2023 0:28 Camden Public School Students to Return Masked After Winter Break 1:45 Health Officials Want People to Mask Up During the Holiday Season 9:54 A Survival Story at Sea: The Lineup