By Emily Reed As COVID-19 cases in the U.S. surged amidst holiday gatherings and the continued spread of the highly-contagious Omicron variant, teachers, parents, school districts, and government officials have clashed over K-12 students returning for in-person classes. Teachers across the country have raised concerns about personal safety as well as the safety of students at a time when cases are spiking. This past week in Chicago, the district canceled four school days afte