They've said no school for two months. I think that's a conservative estimate.
I saw a note on the MA homeschooling message board today from a woman who has her two nieces from New Orleans. They had been in a shelter, and their parents didn't want them to have to stay there for the next two months. The poster wondered how to go about getting permission to homeschool them. The consensus was that she didn't necessarily have to get permission because she isn't their guardian; they are just visiting.