https://www.mercurynews.com/2020/03/10/bay-area-schools-deal-with-coronavirus-outbreak-san-francisco-archdiocese-closes-all-schools/

All 90 San Francisco Archdiocesan K-12 schools will be closed for two weeks amid the coronavirus outbreak, including schools in Marin and San Mateo Counties, the archdiocese said Tuesday.

Superintendent of Schools Pamela Lyons said in a statement all of the archdioceses’ campuses will close from March 12 through March 25 following confirmation by the San Francisco Public Health Department on March 8 that a student in an archdiocesan school had tested positive for COVID-19.