Almost all programs lack the proper positioning to follow a young person through the years.

We don't expect a summer math program to make math work for kids. At best it "stimulates" in the same way a summer-long Raspberry Pi electronics project does, but it builds no foundations. The education market has way too many of these motivational products and not enough investment in foundations.

But any program that focuses on foundations is over a year from application, and that implies that you have enough credibility to go for over a year without stakeholders demanding very concrete results. I suspect that what many people in this forum want are classes which provides a substantial accumulation of foundations over the years.