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State of California—Health and Human Services Agency
California Department of Public Health

May 23, 2023

All Californians

COVID-19 Public Health Guidance for K–12 Schools to Support Safe In-Person Learning, 2022–2023 School Year

​​​This guidance is no longer in effect and is for historical purposes only. See the2023/24 K-12 School Guidance​ for updated information.​​​​​​​​​


This guidance is intended to support safe, in-person learning in K–12 schools and mitigate the spread of COVID-19. Disease management strategies in K–12 schools are guided by the principle that safe, in-person learning is critical to student well-being and development.

COVID-19 is here to stay, but we have learned methods and gained tools to decrease its impact in our health and well-being. California's schools can manage this disease in sustainable and adaptive manners. In alignment with the state's SMARTER plan, California will continue to provide resources—including COVID-19 tests—to support these goals and prevent broad disruption to in-person learning.

Additionally, many of the strategies used to address COVID-19 can protect school communities from other diseases and support healthy learning environments. In alignment with the CDC, California schools should consider the approaches described below as potential methods to also safeguard students and staff from other airborne pathogens, allergens, and pollutants (e.g., wildfire smoke).

The guidance is based on current scientific knowledge and anticipated trends. It is subject to change, as COVID-19 conditions can shift rapidly and our response in schools must remain nimble and responsive to dynamic challenges.  

General Considerations:

  1. The guidance is effective July 1, 2022, unless otherwise stated, and will continue to be reviewed regularly by the California Department of Public Health (CDPH). 
  2. For ease of reference, the guidance includes information about certain relevant requirements outside of CDPH authority. See the linked sources noted within Required Actions below for more details.
  3. California affirms the authority of local health departments and local educational agencies to maintain or establish additional guidance, including required actions, for K–12 school settings in their respective jurisdictions.  When making a determination of whether additional measures are warranted to mitigate in-school transmission of COVID-19, CDPH recommends local health and education officials confer and review this guidance, relevant local considerations, and CDC guidance.
  4. In workplaces, employers are subject to the Cal/OSHA COVID-19 Prevention Non-Emergency Regulations  or in some workplaces the Cal/OSHA Aerosol Transmissible Diseases Standard, and should consult those regulations for additional applicable requirements.
  5. When applying this guidance, consideration should be given to the direct school population and the surrounding community. Factors include:
    • COVID-19 data from the CDPH dashboard and your local health department data page;
    • COVID-19 vaccination coverage in the community and among students, teachers, and staff;
    • local COVID-19 outbreaks or transmission patterns;
    • indoor air quality at relevant facilities;
    • availability and accessibility of resources, including masks and tests;
    • ability to provide therapeutics in a timely and equitable manner
    • equity considerations, including populations disproportionately impacted by and exposed to COVID-19;
    • local demographics, including serving specialized populations of individuals at high risk of severe disease and immunocompromised populations; and
    • community input, including from students, families, and staff. 
  6. It is recommended that schools communicate to students, parents, staff, and the broader school community about the measures in place to safeguard health and well-being. This can include direct dissemination of safety plans (e.g., via email), providing information for students to take home to their families, and/or posting plans on a school's website or around campus. Communication should be cognizant of languages spoken and literacy levels of community members.  


Mitigation Strategies 

Staying Up to Date on Vaccinations

Vaccinations prevent illness by working with the body's natural defenses to help safely develop immunity to disease. Not only do vaccinations provide individual-level protection, but high vaccination coverage reduces the burden of disease in schools and communities and may help protect individuals who are not vaccinated or those who may not develop a strong immune response from vaccination.

1. Recommended Actions:

a. California strongly recommends that all eligible individuals get vaccinated against COVID-19 and remain up-to-date to protect oneself and reduce transmission of the virus.

​b. Additionally, children have fallen behind on receiving other vaccines over the course of pandemic, placing them and their communities at increased risk of falling ill from other vaccine-preventable illnesses. Schools should review statutory requirements for vaccination requirements for entry into K–12 schools and visit Shots for School for information. 

Optimizing Indoor Air Quality:

The risk of getting COVID-19 is greater in indoor settings with poor air quality. Effective ventilation and filtration can curb the spread of COVID-19 and other infectious diseases. It may also protect students and staff from exposure to wildfire smoke, along with other airborne allergens and pollutants.

1. Recommended Actions:​

a. Follow CDPH recommendations to improve indoor air quality to mitigate against COVID-19 in K–12 schools. Facility maintenance staff may also review technical considerations (PDF).

​b. In circumstances where outdoor air quality is poor (such as from wildfire smoke), schools are encouraged to confer with local health officials to determine the best approach forward. Considerations include access to the following:

        • air filtration strategies that do not rely on outdoor air sources (e.g., portable air cleaners);
        • higher quality facemasks (e.g., N95, KN95, or KF94 respirators);
        • alternative spaces with better air quality to host in-person learning
        • alternative ways to commute to/from school; and 
        • local COVID-19 epidemiologic factors (i.e., vaccination coverage status, community case rates).  

For more information, see resources and guidance from the California Department of Education and the California Air Resources Board.

Using Facemasks:

Masks, particularly high-quality and well-fitting masks (PDF), remain highly effective, inexpensive, and are dynamic tools to protect oneself and mitigate transmission of COVID-19 and other respiratory pathogens.

1. Required Actions:

a. As noted in CDPH guidance Get the Most Out of Masking, “no person can be prevented from wearing a mask as a condition of participation in an activity or entry into a venue or business (including schools or childcare), unless wearing a mask would pose a safety hazard" [e.g., watersports].

​b. As noted in Cal/OSHA COVID-19 Prevention Non-Emergency Regulations, “Employers shall provide face coverings and ensure they are worn by employees when required by a CDPH regulation or order."

2. Recommended Actions:

a. Unless otherwise directed by local health departments or local educational agencies, students and staff should follow CDPH guidance to Get the Most Out of Masking, as well as masking guidance for specific situations referenced below (e.g., when having symptoms, being infected, or exposed).  

b. Schools are encouraged to develop and implement local protocols to provide masks to students who inadvertently fail to bring a face covering to school and desire to use one.

Getting Tested for COVID-19:

Testing remains a key mitigation layer to detect and curb transmission of COVID-19. Schools are encouraged to ensure access to COVID-19 testing for students and staff, particularly for vulnerable communities. Schools should review support and resources offered by the California COVID-19 Testing Task Force, as well as those available through healthcare insurers, local, and federal sources.

1. Recommended Actions:​

​a. CDPH recommends that antigen tests be considered the primary option for detecting COVID-19 in schools, compared to PCR tests.  For more information, see the Testing Framework for K–12 Schools.

b. Testing recommendations are referenced in relevant sections below.

c. Additionally, testing should be considered when engaging in activities that might result in high-risk exposures (e.g., large gatherings, travel).  Such activities may occur more often during major breaks from school (e.g., summer, winter, spring).

Maintaining Clean Hands:

Hand hygiene can prevent the spread of infectious diseases, including COVID-19.

1. Recommended Actions:​

​a. Schools should teach and reinforce proper handwashing to lower the risk of spreading viruses, including the virus that causes COVID-19.

​b. Schools should ensure adequate supplies to support hand hygiene behaviors, including soap, tissues, no-touch trashcans, and hand sanitizers with at least 60 percent alcohol for staff and children who can safely use hand sanitizer. Hand sanitizers should be stored up, away, and out of sight of younger children and should be used only with adult supervision for children ages 5 years and younger

​c. Schools should teach and reinforce etiquette for covering coughs and sneezes to help keep individuals from getting and spreading infectious diseases, including COVID-19.

Managing Individuals with Symptoms:

Staying home when sick can lower the risk of spreading infectious diseases, including COVID-19, to other people.

1. Recommended Actions:

a. K-12 schools are encouraged to develop standard criteria for managing students who develop symptoms of infectious diseases, including COVID-19. In most situations, any student who develops new, unexplained symptoms should not return to campus until it is clear that symptoms are mild and improving or are due to a non-infectious cause (e.g., allergies). This includes waiting until 24 hours have passed since resolution of fever without the use of fever-reducing medications. 

b. Additionally, if symptoms are concerning for COVID-19, it is strongly recommended that students wear a mask and get tested immediately. Students should also follow CDPH recommendations for retesting and/or isolating if results are positive.

c. Schools should avoid policies that incentivize coming to school while sick.

Reporting COVID-19 disease burden to local health authorities:

Notifying local health authorities of the disease burden in schools can expedite deployment of additional strategies and resources to manage illness and contain transmission and outbreaks.

1. Required Actions:​

a. K–12 schools should refer to California Code of Regulations (CCR) Title 17, §2500 and §2508 for reporting requirements. Note that 17 CCR §2500 has been temporarily modified by the State Public Health Officer Order of February 10th, 2022

b. As workplaces, schools are subject to COVID-19 workplace outbreak reporting requirements stipulated in  Cal/OSHA COVID-19 Non-Emergency Regulations.

Managing Students Diagnosed with COVID-19:

Prompt management of students with COVID-19 can prevent further spread and, in some cases, allow for early treatment.

1. Recommended Action:​

a. Students diagnosed with COVID-19 should follow recommendations listed in Table 1 (Persons with COVID-19) of CDPH's guidance for the general public.

Managing Students Exposed to COVID-19:

Addressing exposures to infectious diseases, including COVID-19, can allow for rapid testing, early treatment, and prevention of further spread.

1. Recommended Actions:​

a. Schools should consider providing a general notification to the entire school community when many in the community​ may currently have COVID-19 and be infectious to others. This communication can alert all to the increased potential of being exposed to COVID-19 due to a rise in cases among school and community members, and remind all to monitor for symptoms and get tested.

b. All students with known exposure to persons with COVID-19 should follow recommendations listed in Table 2 (Asymptomatic Persons Who are Exposed to Someone with COVID-19) of CDPH's guidance for the general public. If they remain without symptoms, students may continue to take part in all aspects of K–12 schooling including sports and extracurricular activities.  

Managing COVID-19 Outbreaks:

CDPH will continue to support local health and education officials in managing suspected or confirmed outbreaks of COVID-19. 

1. Recommended Actions:​

a. Broad disruptions to in-person learning, such as temporary school or classroom closures, due to COVID-19 should remain a last resort and considered only after all available resources have been exhausted, and only after conferring with local health officials.

b. Local public health officials are encouraged to contact CDPH to learn more about consultation, testing and vaccination resources to support management of COVID-19 outbreaks.

Cleaning Facilities:

In general, routine cleaning is sufficient to remove the virus that causes COVID-19 from surfaces. If disinfectants are used, use asthma-safer products.

1. Recommended Action:​

​​​a. Drinking fountains may be open and used by students and staff. Routine cleaning is recommended.

Additional Considerations

  1. Considerations to address student mental and behavioral health: Schools are highly encouraged to implement strategies to address student mental and behavioral health. Schools should review guidance and resources available to support social and emotional learning and mental health resources for youth, including California's Healthy Minds, Thriving Kids Project.

  2. Considerations for students with disabilities or other health care needs: When implementing this guidance, schools should carefully consider how to address the legal requirements related to provision of a free appropriate public education and requirements to reasonably accommodate disabilities, which continue to apply. For additional recommendations for students with disabilities or other health care needs, refer to guidance provided by the American Academy of Pediatrics.

  3. Considerations for higher risk activities: Certain activities that involve increased and forceful exhalation can pose increased risk for getting and spreading COVID-19, particularly if conducted indoors, in poorly ventilated settings, and/or without the use of masks. Accordingly, schools may consider implementing additional measures to mitigate transmission in these settings, including masking, screening testing and vaccination, particularly during COVID-19 outbreaks or surges.

  4. Considerations for large events at K–12 schools: Particularly during surges of COVID-19, school dances, large assemblies, and other school-based crowded events, especially those held indoors, all have the potential to cause substantial spread of COVID-19 within and beyond the school community. Prior to hosting large events, schools are encouraged to review the Safe and SMART Events Playbook (PDF) for mitigation strategies that should be considered.

  5. Considerations for visitors to K–12 schools:  Schools should not limit access for essential direct service providers who comply with school visitor policies due to a concern about mitigating spread of COVID-19. 

  6. Considerations for boarding schools and programs that may operate residential components: Participants in activities with a residential component are at increased risk of getting and spreading COVID-19 to one another. Accordingly, they should consider all the layered mitigation strategies described in this guidance, especially recommendations to get vaccinated and undergo testing for COVID-19 prior to returning to school following major breaks (e.g., summer, winter, spring).

    Originally Published on June 30, 2022​