School closures can have adverse health effects on students as reviewed by Viner et al. (2022) in “School Closures During Social Lockdown and Mental Health, Health Behaviors, and Well-being Among Children and Adolescents During the First COVID-19 Wave.” For this current school year, San Mateo County schools have remained open for in-person learning. San Mateo County, like others across the State of California, is experiencing an increase in COVID-19 cases in school-aged children. Despite this increase, schools remain safe for in-person learning because of the ongoing collaboration between the San Mateo County Office of Education and San Mateo County Health.