Well, I've said this before myself, and it turns out I was wrong as well.
from an article at minnpost...
"The statistical argument we'd hide behind was that our kids of color weren't doing so much worse than kids of color in other states, but rather the gap was mostly a function of our white kids doing so much better than white kids in other states.
I was wrong. That argument is simply not true, according to the latest evidence."
Minnesota's stubborn and scary reading achievement gap