Seriously though, those tribes or large familial structures that keep the youth accountable because their authority is established and trusted is what all children need. Sometimes that trust comes from teachers but rarely.
There is no equivalent. Full stop.
Maybe you could re-create an extended family w/ friendship and local community - "the village" so to speak - but let's say I have my severe doubts about finding enough like-minded people in at least the US to accomplish it. Very few with options have the commitment.
The government and institutions seriously cannot even hope to replace a tiny fraction of this support structure though. People actually have to care about each other on a individual human level. It turns into checkboxing CYA otherwise - having seen a bit of this implementation in social work.
Historically, the role of the “parentin school” you’re proposing has been played by the family, most importantly grandparents. As we move away as a society from relying on family structures, we need to recognise their utility and find equivalents.
We moved away successfully from family structures in many areas of society: succession of rulers, for example. So this doesn’t need to be a bad thing. But I think the role that grandparents played should be studied carefully when proposing certain types of schooling for parents.