But that's a correlation relationship, well off families tend to have higher performing kids. A reason for that may be that in order to become successful you ne

But that's a correlation relationship, well off families tend to have higher performing kids. A reason for that may be that in order to become successful you need to value an education. I'm trying to find the underlying causation of why things got that way and I'm sure it's much more complex than I'm making it out to be.