Make sure that the table and chair fit your children. They can decide whether they wish to work at a table or on a floor mat.
Actually, I find furniture an easy way to spot a bad school. If you see a photo of a classroom and the furniture does not fit the children, you know that the teacher is not qualified to work with children. Later, this same teacher will complain that children “will not sit still,” she will tell you that your child has an attention deficit problem, and finally your child will have “bad handwriting” (because they can’t sit properly, the hand cannot move properly). And your child will “hate school” or not want to “do work.”
It’s easier to do a quick assessment of the furniture.
It is important to make sure your furniture at home is perfectly sized to your child! You can always trim the legs of both tables and chairs.
Notice how the children in the photo use the table from standing and seated positions.
Speaking of ergonomic seating, remember that you can buy a toddler-sized regular toilet. Those things are invaluable. Adults can use them, too.
I think the picture is great. This was from 100 years ago. The children are allowed to move around too, not just sit behind a desk. Now we industrialized the process and have to make sure the curriculum covers topic MS K. AR.13.1. Could you imaging 6'tall desks at work? And 4' chairs? And you have to get work done?