“Our whole entire existence revolves around COVID right now,” Groenland says. But if the months since the pandemic began sweeping the country have been a challenge for school nurses, the coming weeks are likely to heap more strain and duties on them as students return from having celebrated the holidays. Many will have traveled and attended family gatherings, despite health experts’ warnings that this could spread the virus, and it will fall on people like Groenland to keep kids and school staff safe in districts where some or all classes are in-person.