Positive cases isolate for 5+ days and obtain a negative antigen to return to work or school.
Unvaccinated household members of those positive cases quarantine for 10 days (unless they have recently recovered from COVID themselves, in which case they need not quarantine at all).
All others need not quarantine - just take extra precautions.
All students, staff and parent volunteers must wear non-cloth, medical-grade masks.
> Adults should wear N95 or KN95 masks, where available.
> Students should wear well-fitting, non-cloth masks of multiple layers of non-woven material with a nose wire.
Full text of the updated guidance here.