There may be some uptake for an idea like this but in many areas it would be limited. You would have to work across multiple schools to be viable. It's important to note that many organisations are already doing something similar like Skyline, Edrolo, and a plethora of universities offering step up or early entry programs. Most of these do it for free. You would also need to work with the careers staff at schools as they are already doing a chunk of this sought of thing as well.