Chicago Mayor Lori Lightfoot announced that public school teachers were returning to their schools after reaching an agreement on COVID-19 safeguards with the district, ending a walkout that canceled classes across the city for a week. #Chicago #COVID #Chicagopublicschools #LoriLightfoot #News #Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en