Grace John, who works at a school in San Lorenzo, gets a COVID-19 shot at a mobile vaccination clinic in Hayward, Calif. California is among those states requiring all teachers and school staff to get vaccinated or undergo weekly COVID-19 testing.
Students are reminded to wear a mask amid other chalk drawings on the sidewalk as they arrive for the first day of school at Union High School in Tulsa, Okla. in 2020. Oklahoma is one of eight states that have banned local mask requirements for the 2021-22 school year.