you should consider life unfair, because
the test of truth in life is not whether we can remember
what we learned in school,
but whether we are prepared for change,
whether we are prepared for jobs that haven't been created,
to use technologies that haven't been invented,
to solve problems we just can't anticipate today.
And once hotly contested,
our way of measuring outcomes has actually quickly become the standard.
In our latest assessment in 2009,
we measured 74 school systems
that together cover 87 percent of the economy.
This chart shows you the performance of countries.
In red, sort of below OECD average.
Yellow is so-so, and in green are the countries doing really well.
You can see Shanghai, Korea, Singapore in Asia;
Finland in Europe;
Canada in North America doing really well.
You can also see that there is a gap of almost
three and a half school years between
15-year-olds in Shanghai and 15-year-olds in Chile,