Sorry about that, I meant to quote part of his post as well since they both went with what I was saying. Didn’t mean to imply that you felt that way as well.
Do you have a cite that breaks it down in this way? In our district, test scores correlate with the percentage of students who get free or reduced price lunches. On the whole, the higher the income the greater the enrichment at home and the better the scores. I’d expect that in general someone who wants to home school would also provide an enriching environment. It’s possible this is not true for those who school for religious reasons (or the enrichment is not the sort that helps test scores) but some data would be nice.
I’ll address this when I’m done with final exams. We addressed it in my Organization of Education in American Society class. That will await Thursday, sorry, but Educational Psychology and Discrete Mathematics (among other things) have my almost undivided attention.