AdvertisementEducation Dept. Announces Civil Rights Investigations Into 5 States' Mask Mandate BansUpdated August 30, 2021Cory TurnerfacebookEmailNashville, Tenn., kindergarten teacher Amber Updegrove leads her class in a lesson this month. On Monday, the U.S. Department of Education announced an investigation into Tennessee's requirement that schools allow families to opt out of mask mandates. (AP)This article was originally published on August 30, 2021.