And what are they doing now? What jobs do they have? How do they pay?
When you exit the system, the status and meaning it promises doesn't doesn't have the same value. If you got kids to the level of basic analysis / calculus, traveller level in a second language, and passable in the reasoning and comprehension skills of the LSAT, they would be smarter and more capable than most university undergrads. If you add physical competence hobbies to that where some of those skills get applied, you get even more differentiated. Teenagers get amateur pilot licenses, so they are plenty capable.
A way to match home schooled kids with structured team or olympic sports and orchestra or dance programs would be a big opportunity. Maybe we're at the cusp of an edu-tech boom?