That answer sure does sound like the stuff of magical dreamworlds.
Whatever experiences maximize their potential is the province of families, not the stuff of society-paid education. It's not that it couldn't be provided by the latter, but the daunting expense means that it will never be funded to a level that maximizes on an individualized basis.
What would that require? One teacher for every 4 kids, maybe you could stretch it to 6 or 8. On top of that, a multitude of specialists to ensure that any special needs are addressed in an individually customized fashion to maximize the potential of every kid. In many districts, we can't get agreement that we should feed every kid, let alone agreement that there should be roughly one professional adult in total for every 2-3 kids.
> In dreamworld, every kid would follow their own path. There would be no “advanced classes” or “tracks” because those concepts wouldn’t exist.
Those concepts would absolutely exist, just under a different label (and maybe not even that), because kids at the very top of the range would be taking something that would be readily recognizable as the close equivalent of today's advanced classes.