The May SAT scores for the entire country of Korea were cancelled because of widespread cheating.

http://edition.cnn.com/2013/05/09/world/asia/south-korea-exam-scandal/
South Korea cheating scandal hits university bids
By Dan Rivers, CNN
May 10, 2013

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It is likely the scandal has tentacles extending across Asia. Brokers in Southeast Asian countries like Thailand are understood to have acquired SAT test papers in advance, selling them for large sums to middle men.

At one of the raided schools in South Korea, a flustered teacher insisted off camera that his Hakwon had done nothing wrong. But at another cramming school, not implicated in the scandal, Vice Principal Byung Yeob Yoon claimed cheating is well known among super ambitious "tiger" parents and their "cub" kids, as they are known here, with tens of thousands of dollars changing hands for the test papers.
"The pressure is there to get the scores. They know there are some avenues where you can achieve higher results, through unsavory or unethical means, and this is a very combustible mixture," he said.

"We get a lot of tiger moms and tiger cubs, and that's why all this hyper competition is happening and that's why people are finding ways to you know skirt the system."

"Just from the grapevine I have heard, tens of thousands of dollars (changes hands) for access to these tests. A lot of parents know where to go, whether it's a subject text or SAT 1."