A student and his parents walk into Benbrook Elementary School on the first day of school amid the coronavirus disease (COVID-19) pandemic in Houston, Texas, August 23, 2021.

The Department of Education has launched a civil rights investigation into whether states that have banned mask mandates are discriminating against students with disabilities who could be at a higher risk for severe illness from Covid.

The department's Office for Civil Rights has opened directed investigations in five states — Iowa, Oklahoma, South Carolina, Tennessee and Utah.