AdvertisementChicago public school classes are canceled after teachers union backs remote learningUpdated January 05, 2022Nell ClarkfacebookEmailA sign on the door of Lowell Elementary School asks students, staff and visitors to wear a mask to prevent the spread of COVID-19 on Wednesday in Chicago. Classes at all of Chicago public schools have been canceled Wednesday by the school district after the teachers union voted to return to virtual learning. (Getty Images)This article was originally published on January 05, 2022.