More schools in the United States are using rapid-antigen tests, similar to the one shown in this photo, to minimize the need for home quarantines after staff and students are exposed to COVID-19.
Sen. Josh Hawley, R-Mo., speaks during the Senate Judiciary Committee hearing to examine Texas's abortion law, Wednesday, Sept. 29, 2021 on Capitol Hill in Washington.
Arizona Republican Gov. Doug Ducey signed a bill in April that would ban school districts from requiring training in so-called "critical race theory." That law is now being challenged in courts.