Pre-kindergarten students work on their school work at West Orange Elementary School in Orange, Calif. The Centers for Disease Control and Prevention relaxed its social distancing guidelines for schools on March 19, saying students can now sit 3 feet apart in classrooms.

FILE – In this March 18, 2021, file photo, pre-kindergarten students work on their school work at West Orange Elementary School in Orange, Calif. The Centers for Disease Control and Prevention relaxed its social distancing guidelines for schools Friday, March 19, saying students can now sit 3 feet apart in classrooms. The new guidelines also remove recommendations for plastic shields or other barriers between desks. (AP Photo/Jae C. Hong)