. >> ken maguire, let's take a look at the mat. it's a striking graphic to see the heavy concentration of southern states and western states where there are schools with so many kids living in poverty. what is it about the way we run public schools that is concentrated so many kids in so many parts of the country, are there things that the states have in common that give us this kind of result? >> well, i think the states - you know, let me start by saying that i have been around the country a lot, showing that map. and it is startling. these are the states with the highest birth rates. they are the states that are growing in population and contrast to the north-east. so, again, the demographic patterns rising immigration, na, in part explains what we see. i think ingrid is right. economic circumstances have not helped. you put those two things toot. and you see a set of challenges facing public education. that they didn't see 20, 30 years before. >> why is it important to know, to get the eye-popping statistic, 50% out into people