- The social expectation (and reality) that education is children's responsibility.
- Unlimited freedom to play, explore, and pursue own interests.
- Opportunity to play with the tools of the culture.
- Access to a variety of caring adults, who are helpers, not judges.
- Free age mixing among children and adolescents.
- Immersion in a stable, moral, democratic environment.
There's more to be said about these, but I just wanted to quickly post them here as one place to remember them.