Isn't that what parent said? Once you control for college attended, outcomes do not depend sugnificantly on parent incomes; therefore parental income is not a

Isn't that what parent said? Once you control for college attended, outcomes do not depend sugnificantly on parent incomes; therefore parental income is not a confounding factor in looking at the ROI of collages. Children of wealthy parents still tend to do better, but that is because they get to purchase a superior product.