AdvertisementOfficials are determined to keep schools open, despite omicron06:54Download AudioResumeUpdated January 03, 2022Anya KamenetzfacebookEmailA Hollywood, Calif., classroom sits empty in August 2020. At least 3,229 schools around the U.S. announced they were canceling in-person learning as of Monday evening. (Getty Images)This article was originally published on January 03, 2022.