PISA

First I heard of this group was in Pat Buchanan's The Sky is Falling book where he cites a study of the PISA results published by virginiadare.com.
Like the video, it states that US schools ain't bad. But that author breaks things down by ethnicity & points out the US average core is weighed down by African Americans and Hispanics while Euro Americans & Asian Americans have very good scores. He also points out that Hispanics in the US schools did better than Hispanics in Central & South American countries.
So, maybe our schools are doing something right?
Here's one of the graphs that is missing on the site.As the vdare guy says, there's a ton of data and he does not cite a lot of factors like student wealth or if the kid lives in a rural or urban area. You could break it down to poor rural Asians v. wealthy urban Hispanics, single parent v. double parent, ethnicity of adopted parents & see where it gets you, but the bottom line is not the initial, overall national scores.