I would be happy to see that done. I'm not making a claim about the cause of the problem except to observe that it doesn't seem to be affecting everyone. What I

I would be happy to see that done. I'm not making a claim about the cause of the problem except to observe that it doesn't seem to be affecting everyone. What I'd really love to see is an application that allows you to tweak the various group-bys (I'd like to try grouping by cost-of-living-adjusted log income brackets, personally, because my current estimate of that being the most related metric is highest. Or I'd like to see what happens if you take groups of kids with the same ratial and income backgrounds from various countries. Hold some variables constant, basically.). I am only saying exactly what I said: it doesn't seem that the US educational system, in its entirety, is significantly defective relative to other countries. Some combination of the attributes of certain American populations and/or the system's effect on them is causing those populations to perform much worse than kids in European and Asian countries. This in no way spells doom for our entire country as the article argues.