KT,

As long as discourse remains civil . . .

Yes,the correlation you pose between two parents and test scores is completely consistent with the observations of my friends in education. It would be interesting to see how it breaks out in a multi-variate analysis, ranking the factors most highly correlated with the observations. Still, what really surprised me, maybe being a naive small town kid, was how pervasive dysfunction is in a lot of 2 parent white families.