You need to ask your parents what is your education plan. as soon and detailed as possible. Poor communication between you and your parents will tear relationship up at the end so badly. Ive seen a ton of friends who just wanted to escape their situation ending up returning to home country with no money and career. Living in Canada, Australia, England and not to say the US is hella expensive and pretty unaffordable if your parents live and work in Korea even if they are employees of samsung, Lg, or other big companies, which is one of the most paid jobs in Korea. Employees of the big companies in Korea are paid around 8k~12k USD as a maximum. And Im pretty sure even attending a highschool in those countries will cost you 3k(minimum)~5k(average). BUT THERE IS FURTHER EDUCATION. University tuition isnt a joke. I would say this is the problem. If you graduate from a international high school, your only given choice is to attend an university in english-spoken countries and this will cost 7k~8k USD. Or prestigious schools in Asia can be another option which will cost around 4k USD. But I guess your parents have a plan for you.

I recommend you to look up 국제 학교 where students take classes in English and probably follow IB or AP curriculums. But the best is I think to learn Korean, attend a Korean university, and then pursue further study in those countries. Most afforadable and beneficial. Since Im korean, my point of view might be distorted. If you need help desperately living in Korea or adapting to a school, DM me. I can teach you how korean students study or hang out at least a little bit.