Something I wrote last week about a similar test, the NIMSS:
Anti-education screeds often talk about how the US is failing students in STEM education, with references to studies showing US kids in the middle of the pack of nations on international tests.
Probably the biggest such test is the Trends in International Mathematics and Science Study: their report is here: TIMSS - TIMSS 2011 Results.
I was recently looking through it, and found some statistics that are, I think, important for folks to know, with a focus on North Carolina kids taking the fourth-grade math test (I focus here because it’s closest to my own bailiwick–not trying to cherrypick stats).
First, the international average score on the test is normed at 500. The US scores significantly above average, at 541. North Carolina scores above the national average, at 554.
But where it gets interesting is when you break it down by poverty.
In schools containing 25%-50% low-income students, the score jumps to 568.
In schools containing 10-25% low-income students, the score jumps to 587–for reference, these kids perform as well as students in China and Japan.
In schools containing fewer than 10% low-income students, THESE SCHOOLS DON’T EXIST.
I’m not a statistician, granted, and there may well be a flaw in my analysis. But a superficial look at these statistics confirms my belief that our number one educational priority ought to involve the reduction of students living in poverty.
I haven’t analyzed PISA even at this superficial level, but I do think it’s worth looking at how results break down by poverty rates, both within our country and around the world; at the same time, income inequality within a country is worth looking at (the US has a really high income inequality rate compared to a lot of countries).