In a school setting, an immunocompetent person with zoster (staff or students) can remain at school as long as the lesions can be completely covered. People with zoster should be careful about personal hygiene, wash their hands after touching their lesions, and avoid close contact with others. If the lesions cannot be completely covered and close contact avoided, the person should be excluded from the school setting until the zoster lesions have crusted over. See archive.cdc.gov/#/details?url=https://www.cdc.gov/chickenpox/outbreaks/manual.html for more information. If your program is licensed by a state or county, you should check their regulations as well.