Anyway, people were complaining about opinions not supported by data, so now we have the data. It's time to stop reading our opinions into the data and actually do some analysis. That does take time, but the bulk of the research is the data compilation, and that has been done already (for example, at nationmaster.com assuming that we don't want to question the quality of the data. Now that would be a huge research project.
If I find some time I'll take the tables from this page and do the clustering analysis. guaranteed to evoke a violent reaction from police is to challenge their right to "define the situation." --- David Graeber citing Marc Cooper
I believed in my mind that the differences between the US and the German system for example are due to the different way the public school system is financed in both countries. I searched for data that would clarify who pays what with what kind of taxes etc. I couldn't find it so far. Of course I had not more than 45 minutes to do it. The only thing I found already that apparently in certain circles the US style financing method via vouchers (apparently introduced by Milton Friedman) was heavily discussed and mostly criticized in Germany.
If I can't contribute factual data, I just can't comment. I am sorry to admit that. I just admire the work that must behind a lot of posts here that show real data.