There is no discrimination with regards to Korean citizens and foreigners. The level of study depends on their skills. One can possibly engage in elementary, middle and advanced levels of study. Schools maintain a single type of educational system, which means Korean elementary school has six years, middle school has three years, high school has three years, and university has four years (2 or 3 years for specialist colleges). With regards to higher education, MA Degree and PhD must be completed within two to three years, in general.