Governor Gavin Newsom / California Department of Public Health, CDPH COVID-19 and Reopening In-Person Learning Framework for K-12 Schools in California, 2020-2021 School Year (July 17, 2020) (Ex. ECO-B-143)
Ballotpedia (secondary source; Burbio data), Ballotpedia, 'School responses to the coronavirus (COVID-19) pandemic during the 2020-2021 academic year' (July 8, 2021) (Ex. ECO-B-106)
