My position requires college but not an advanced degree.
The $29K figure is for a single household, $59K for all households.
Since college graduates earn more on average than non college grads, having everyone support their education is regressive. So is the mortgage interest deduction, though it is not something I have benefitted from, because to counter this regressivity Massachusetts gives a rent deduction on their state income tax and I would have done better taxwise claiming that over my adult lifetime.