New York City will reopen its school system to in-person learning, and increase the number of days a week many children attend class, even as the coronavirus pandemic intensifies in the city, Mayor Bill de Blasio said Sunday, The Associated Press reported.

Some elementary schools and pre-kindergarten programs will resume classes on December 7, the mayor said. Others will take longer to reopen their doors.

The plan for reopening middle and high schools is still being developed, de Blasio said.

But less than two weeks ago, Bill de Blasio had announced that schools New York City were shutting down because of a rising number of COVID-19 cases in the city.