Michelle Rhee said on CNN that the US tested 27th on the world scale.
The US tests everyone. Special Ed, IEP’s, all vocational students. Other nations just test their cream of the crop, their college bound. In most nations, you have to pass an exam to get into high school. In India, which Markell uses in his comparisons btw, only 15% reach High School, and only 7% graduate.
When we take our top 15% and match it up against the rest of the world, the US is number one.