"Anyone can enter to the high school in Korea. They study hard until the third year and then choose the course they want. Usually could be choosen between going to college or workplace. I chose to go to college, because the staying at school is a wonderful time. So, I wanted to study more in college. I could feel the difference while undergoing three years of high school and college. I found the difference between the two schools. There are the Ewha Girls' High School and the Kangwon National University.
The first discussion was about the location. Ewha Girls' High School is located at Seoul City Hall and the central police station is known for its awesome seascapes around.
Deoksugung and doldamgil attract many tourist. Also, this spot is used as a shooting location( movie or drama is often used at this street). At the school's walls there are murals that were painted by the students . However, Kangwon National University is located in Gangwon Province."
I tried to correct your grammar, but I didn't understand well the sense that some sentences have. If you give me more information about what you tried to tell within your text, I could say you how to write it again being more specific. However, you have a good knowledge about english. Good luck and keep going! :)