Don't Finland, China and Singapore have the highest IQs of any countries? Why can't that be the answer? To me, what you do exactly in school is likely pretty secondary.
I don’t think reliable data exists for making these comparisons, but even if it did, how you perform on an IQ test is strongly influenced by your schooling.
I don’t think reliable data exists for making these comparisons, but even if it did, how you perform on an IQ test is strongly influenced by your schooling.