Pretty sure the generic answer is "unschooling + free range parenting" which already exists. To be more specific... read books. Get a job (maybe a standard job

Pretty sure the generic answer is "unschooling + free range parenting" which already exists. To be more specific... read books. Get a job (maybe a standard job if 16, maybe mowing lawns if 13, whatever). Spend a day at the local museum. Hang out with your friends at the park fighting each other with sticks. Write a story. Build a table. Voluntarily take classes in things that are actually interesting and useful, and instead of caring about grades see if you can apply/expand on the knowledge. Build a fort in the woods. Learn to sew. I could go on, but I feel like you get the point. Early education is basically day care so I can see it making sense for kids that need supervision and don't have basic skills yet (literacy, skepticism). But a well-adjusted ~13 year old should have stuff to do that's way more important than school. "Falling behind on the education system" is a product of the current system, not an end in itself. I don't want to make adults that know how to sit still and tolerate the system, I want to live with people who are actively engaged with the world. A reasonable criticism of this is that very disruptive or malicious kids might get away with more BS. The school system as it currently is doesn't prevent bullying, but some of the current "enforcement power" would definitely have to deal with kids that abuse it.