How to get into Yonsei University as an American?
Yonsei University is one of the three most academic universities in a country that ranks equal first for the highest academics in the world. You would need to be an easy fit for one of the top six US universities to get accepted. By the way, only the US cares about extra curriculars. Everywhere else in the world university is all about academics. If you do not speak. read and write Korean at a close to native fluency, Underwood has courses conducted in English, this college is for international students. Huddling together with other English speakers rather negates the point of studying overseas but you would not need to sit a Korean language exam. Perhaps your Korean is better than your English. Interesting that you cannot even spell your intended major. My hunch is that you should lower your sights.
1. You need to be fluent in Korean at a high academic-technical level of proficiency. Conversational Korean is not enough to handle college coursework. 2. You need sufficient funds for all school + living expenses + return transportation to country of citizenship to apply for student visa if a school accepts you. $15k/year is nowhere near enough. 3. Applying anywhere as a foreign student is very competitive. Your grades are not good enough to consider getting into college, except perhaps community college at home.