That’s exactly the kind of classroom I’m describing.
don’t be too focused on the individual here.

Fuck you, the kids ARE individuals and classroom planning that doesn't account for that is guaranteed to fail. When you "assign responsibility" by telling a child to fix it themselves you aren't talking to a hypothetical, you are talking to a real, single individual who needs real help and is being told to just somehow transport themselves. The reason so many children are being failed by school systems worldwide is because of people like you who expect them to fit themselves to your expectations regardless of thier personal circumstances.