Some teachers are grappling with how to protect students and themselves against <a href="http://www.cnn.com/world/live-news/coronavirus-pandemic-vaccine-updates-03-19-21/index.html" target="_blank">the coronavirus</a> in light of new guidelines for returning to in-person classes issued by the <a href="https://www.cdc.gov/" target="_blank">US Centers for Disease Control and Prevention.</a>

Friday’s announcement relaxes recommendations for social distancing to 3 feet from