I am unwilling to research my source (again), but I recently read the findings of a study that concluded that the presence of a father (figure) in the home is the most significant determinant of behavioral "issues" among Black yoots. It is not single parenthood per se that is the driver of truancy, anti-social behavior, petty criminality, substance abuse, and so on. When the single parent is a [cis-gender] MAN, those social plagues basically vanish, and the "outcomes" are essentially the same as for two-parent homes. And Black children brought up in two-parent homes have essentially the same prospects for success - however measured - as for "white" children in the same economic stratum.
It may be that rampant bastardy was an un-intended consequence of Johnson's Great Society programs, but the facts are what they are. Those programs INCENTIVIZED single parenthood, and the Black community has never recovered.
If those kids in the Pittsburgh Public Schools (see link) were supported by two parents, the behavior problems would become manageable indeed. As they are in predominantly "white" schools. And for the record, racism is not the driving force causing Black women to procreate without benefit of a husband.