High school students are commonly expected to study increasingly long hours each year moving toward graduation, to become competitive and be able to enter attractive universities, such as the top SKY (Seoul National, Korea, and Yonsei Universities). Many high school students wake and leave home in the morning at 5am and return home after studying well after 10 pm, then return to specialty study schools often to 2am, from Monday to Friday and also they often study on weekends.It is commonly known saying in Korea that 'If you sleep three hours a day, you may get into a top 'SKY university;' If you sleep fours hours each day, you may get into another university; if you sleep five or more hours each day, especially in your last year of high school, forget about getting into any university.' Accordingly, many high school students in their final year do not have any free time off, for holidays, birthdays, or vacations before the CATs(National College Scholastic Aptitude Test held by Ministry of Education) -university entrance exams.
Is it like that? If so, it is like the preparation needed to get in ITA here in Brazil. Though ITA has an admission rate of only 2% and its admissions test are only once a year.