[epistemenical]

Family involvement helps children get ready to enter school, promotes their school success, and prepares youth for college.

That's a very different thing from what you claimed (which is that family involvement is the end-all of education). Clearly families make a difference, but they're far from the only factor, and the summary there certainly doesn't support the claim that it's impossible to succeed without good familial support. Education is a complicated thing where a lot of things matter.