Definitely talk to the school.
DS2 is on hybrid, but the in person days start next week (our county rate is getting better). The principal gave a presentation last week to prepare parents, and he flat out said that if a child has even a runny nose, s/he should be kept at home. And when kids are at home, they can log into the remote learning for that day to keep up. DS2 has allergies and despite taking his medication daily, some mornings he just wakes up runny/sniffly/sneezy. I'm relieved that there is a plan to keep him learning.
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Mama to DS1 Punkin (2/04) and DS2 Boo (1/09)