I don't mean to bash Finland which is a truly amazing place (no sarcasm, it really is). But at the same time a big problem in education is the scale tends to get clouded. No Child Left Behind's epic failure is a testament to that. Isn't it at least possible that Finish schools also "teach to the test" especially considering they test their students so rarely?
Before we increase class size, abandon charter schools and slow down efforts to integrate more technology into classrooms in favor of higher teacher salaries I'd like to see much more research done in this area.