When it comes to these exams the Koreans have definitely set the standard for cheating on them. This seems to happen every year:
Some students in two Asian countries likely cheated on the SAT exams administered in October and November of this year, the Educational Testing Service has confirmed.
In October, scores were withheld from residents of South Korea and China as ETS, which administers the test worldwide, investigated possible cheating on the exam administered that month. Following a review, the firm determined that “a small number of test-takers had an unfair advantage on the test,” ETS spokesman Thomas Ewing told The Huffington Post on Monday. “ETS is contacting directly these test-takers to inform them that valid scores cannot be provided.”
Citing confidentiality concerns, Ewing declined to say how many scores were invalidated but noted that “the majority of scores” are valid. [Huffington Post via reader tip]
You can read more at the link, but ROK Heads may remember that the SAT had to be cancelled last year in Korea because of widespread cheating.