It's worded confusingly, but I think the point was "public kindergarten" = "focus on meeting standards via remote school" while "private preschool" = "social ti

It's worded confusingly, but I think the point was "public kindergarten" = "focus on meeting standards via remote school" while "private preschool" = "social time." In the US, kindergartens are typically much more academic than elsewhere (while preschools generally have no academic curriculum).