Some Good Eduction Data

If you haven't seen it already, Economix has some good charts on results from the most recent education assessment test administered by the OECD.  The most interesting bits are how low the R² is so low on GDP and education spending and how high it is for socioeconomic status.  Also not the R² is low on the immigration status as well.

I'd have to see more data but it lends more evidence to the idea that you can't fix education solely by focusing on education