One course required reading three thick theoretical books in economics, sociology, and political science, and an additional one filled with personal interviews and social investigation. They were so difficult that even Americans were complaining. Meanwhile, the professor was known for his toughness in grading his students. Soon, two of my Chinese classmates dropped out. My situation looked even worse as I could barely finish half of the readings even though I was trying my best. However, for whatever amount of reading I had finished, I was able to write relatively well-organized and convincing papers, which made our professor very happy as he must have had too much headache with essays of most Chinese students. Amazingly, I passed!
Later, whenever I wanted to show appreciation to my American classmates who helped me with my writings, I always joked: "I don`t think I should thank you guys, but professor H should because you have taken a lot of headache from him by helping me." Some of those who didn`t get an "A" joked back saying: "Oh, I wish I were a Chinese student."
Interviewing, discussing issues in public, doing presentation, or thinking on your feet require tremendous experience and practice. Before you have many opportunities to do it, writing is probably the best way to build your communication skills. It helps you enormously in school application, visa obtainment, work, personal relationship, and eventually success and happiness. So practice it!