Improving Education Systems

How can we measure what makes a school system work? Andreas Schleicher walks us through the PISA test, a global measurement that ranks countries against one another -- then uses that same data to help schools improve. Watch to find out where your country stacks up, and learn the single factor that makes some systems outperform others.

How Much Food Can You Buy For $5 Around The World?

Here's how much coffee, meat, beer, McDonald's, and more you can buy for $5 in countries around the world. For starters, you can buy a lot of beer for $5 in China.

Every Child Needs a Teacher to Learn

6.8 million new teachers are needed to get every child in school by 2015. Check out this INFOGRAPHIC.