California Gov. Gavin Newsom announced a mandate on Wednesday for teachers in the state to be vaccinated or be subject to regular testing in an effort to curb the spread of COVID-19.

“We think this is the right thing to do, and we think this is a sustainable way to keeping our schools open and to address the No. 1 anxiety that parents like myself have for young children, and that is knowing that the schools are doing everything in their power to keep our kids safe,” Newsom said on Wednesday.