"It's time to face up to the fact that children are poor mainly because they don't have a father provider-protector, and the problem we should address is the decline in marriage."
Maybe. But one could as easily posit that children are poor because their parent(s) have low IQs, IQ is hereditary, and IQ is intractable (which is to say, no amount of "early education" raises it). My grandparents came over from the old country, shirts-on-their-backs-penniless. That's as poor as you can get. Yet my mother became valedictorian of every school she attended. That's IQ. Suffice to say, she's no longer poor.
See Real Education: Four Simple Truths for Bringing America's Schools Back to Reality, by Charles Murray