From what I understand, WHO are basically saying it's more airborne than originally known.
We've know for months that it spreads this way. Spray an aerosol and watch how the vapours fall. It's those vapours from the sneezes and coughs that lands on the surfaces etc. If those vapours that stay on the equipment and tables hence nothing can be shared and regular cleaning of desks etc is needed.
This was one of the reasons why there's plastic screens everywhere, why bus drivers compartments were blocked off from public etc. Why if we can we should wear a mask etc in certain places. Logic says if we have to wear them inside some places, then this should apply to all.
But as we know regardless of how the rest of the world are managing to try and provide some education, we aren't designed for this at all. Here we get s bit of snow and thousands of kids miss education, other parts of the world they carry on. Kids that are off because of health reasons have missed education and quickly fall behind, other countries it seamlessly carries on.
That isn't to say that all schools here aren't capable of carrying on. They do what they can and often staff pay visits to the student to help education carry on because they have the resources etc and most of it from donations.
All this has done is shown how bad our education system is here, and it's not surprising when budgets get cut and demands increase from all sides.