Cheating scandal erupts as South Korean students face their toughest test

Two female students (not pictured) at a prestigious Seoul high school have been accused of cheating ahead of a prestigious university exam. Composite illustration.

Seoul (CNN)All flights in South Korea will be grounded Thursday, with no takeoffs or landings permitted for an hour.

Around the country, parents will be praying and packing lunch, and everyone will be avoiding words like "fail" or "fall" to avoid causing bad luck for the hundreds of thousands students taking the College Scholastic Ability Test (CSAT), South Korea's university entrance exam.
The temporary no-fly order was issued by the Ministry of Interior to avoid distracting airplane noise and give test takers a fair shot, but in the run-up to this year's exam, attention has focused on the opposite of fair play. This month, a cheating scandal implicated a prestigious private school in Seoul's swanky Gangnam District, twin girl students, and their father, a senior school official.

    Suspicions rise

      At a press conference at Gangnam's Suseo Police Station on Monday, officers displ