It's been challenging even for the IT departments of technologically advanced companies to adapt to a remote workforce, so schools serving poor communities face daunting obstacles to continuity of education at the moment.
This problem is exacerbated by the existing digital divide.
As an example, I serve on the technology volunteer committee of a public school at which less than 5% of children are technically classified as being in poverty, yet the school had to lend out computers to 20% of the students. The lending program was managed by our volunteer committee so the administration and teachers could focus on ramping up the distance learning program curriculum.
So our school is one of the lucky ones. However, in the same area there are schools where 95% of the students are in poverty, and they have no volunteer committees to help solve these problems, therefore it is left to the already overstretched staff. Some of these schools actually have computers they could lend, but no community knowlege capital to draw upon to organize adapt to the situation.
Before industrialized schooling, mixed age classrooms were the norm.