In this Friday, July 15, 2011 photo, South Korean student Jang Woo-dam, right, and her classmates use tablet PCs to study in a class at Sosu Elementary School in Gwesan, South Korea. The country is ... more 
In this Friday, July 15, 2011 photo, South Korean student Jang Woo-dam, right, and her classmates use tablet PCs to study in a class at Sosu Elementary School in Gwesan, South Korea. The country is taking a $2 billion gamble that its students are ready to ditch paper textbooks in favor of tablet PCs as part of a vast digital scholastic network. (AP Photo/Ahn Young-joon) less 
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Associated Press | Photo By Ahn Young-joon
Wed, Jul 20, 2011 1:50 AM EDT