I think it's 1 year but I'm not exactly sure.. might be 2 years.
Daewon Foreign Language High School was created in 1984.
No.. if you want to enter a state college or univesity you need two consecutive years of a foreign language at a high school level (same language) but is not a graduation requirement .
Gwacheon Foreign Language High School was created in 1990.
Goyang Foreign Language High School was created in 2002.
Seoul Foreign Language High School was created in 1993.
Myungduk Foreign Language High School was created in 1992.
Taegu Foreign Language High School was created in 1997.
Gimhae Foreign Language High School was created in 2006.
Gimpo Foreign Language High School was created in 2006.
Pusan Foreign Language High School was created in 1985-03.
It isn't required for high school, but it looks great for your college applications.
Minimum of two years foreign language in high school