New York City’s public schools will begin shutting down this week, Governor Cuomo announced yesterday afternoon, in an effort to slow the spread of the coronavirus. Hours later, Mayor de Blasio announced that he would soon order all bars and restaurants to close, limiting them to takeout and delivery.

Mr. de Blasio said that the schools would be closed today for all students and staff, but that teachers would be asked to report to work later in the week for training on remote learning. By March 23, the city will move to remote learning, and the school system will be closed except for several dozen buildings that will be used as “learning centers” to support the children of essential city workers like health care employees.

Schools will be closed until at least April 20, but could stay closed for longer, Mr. de Blasio said.

City school buildings will remain open this week for children to pick up food, and then the city will find alternative sites for students who need food to receive it. Students who do not have computers at home will be lent laptops, and the city will work on helping students who do not have internet access get online.