CNN CNN Newsroom Live January 11, 2022 09:06:00
School basis. listen to chicago mayor lori li lightfoot on what she saw got them across the finish line. >> we reached an agreement on the metrics for at a school-based level for when we needed to convert a classroom or school. not surprisingly the component parts of that depend upon staff and/or student absences. we test in every school every week now. but we've added some layers to enhance the testing. >> reporter: on those school based metrics the chief of staff said during the periods of high transmission it would take 40% of the student population to have an absent to move virtual. testin...