Ironically I think a version of this had to happen in the one-room schoolhouses of yore. If you're the only teacher, you can't afford to split everyone by age.

Ironically I think a version of this had to happen in the one-room schoolhouses of yore. If you're the only teacher, you can't afford to split everyone by age. You kind of have to roll people into whatever lessons they can handle and do your best. It was "innovative," in a way I think we're coming to regret, to suggest that all 8-year-olds (for example) must be at the same level across every subject, and none of them should ever be taught alongside a group of mostly 6- or 10-year-olds.