COVID-19 Public Health Guidance for K-12 Schools in California, 2021-22 School Year California Department of Public Health guidance for K-12 schools during the 2021-22 school year, providing comprehensive safety measures including masking recommendations, physical distancing, ventilation, testing, isolation protocols, and extracurricular activity guidelines to maintain safe in-person instruction during the COVID-19 pandemic. primary file various external-programs-reports 2022-04-06_California State CDPH - COVID-19 Public Health Guidance for K-12 Schools California.md various/external-programs-reports/2022-04-06_California State CDPH - COVID-19 Public Health Guidance for K-12 Schools California.md 2022_04_06 website Public Domain 2783 3760 gfile-url xfile-github-download-url pdf-gdrive-url pdf-github-url github-markdown-url github-markdown-download-url web-pdf-url web-slides-url youtube-url web-url