In Brazil, where a lot of families don't have wifi or don't have computers, at least one of the regional governments has set up a new TV channel and is using it to broadcast school lessons. The children have 2 opportunities a day to watch the lessons for their age group. Almost every family has a television set, even in a country which has very high levels of inequality.
I understand that different schools teach differently, that they don't do work in the same order, etc, but for the new school year surely this would solve a lot of problems? They just need to put together a small team of excellent teachers, with some technical support, and they can go a long way to solving the problems that so many of our children are having. My child will be in an exam year next year and will only get 2 days of school a week. So far, she's had no live or videoed teaching, just written homework. This would help her and others in her position so much.