You’ve probably never lived with someone outside of your family before and most likely never shared a room with someone you don’t know. There is definitely an adjustment period.
There are more websites than ever to help you get to know people at the school you will be going to and can generally select one of them to be your roommate, but this can limit your view of the world, according to this New York Times article.
As an international student, a random roommate that isn’t from your same country can help you adapt to your new environment, help you make friends and open you mind just a little to the differences the world has to offer. (Check out this blog from just such an international student!)
Take a chance! Go for a random roommate. You might make a friend for life!
Gretchen Hinderer is in charge of helping you all apply to college and university after you have finished your course with TALK and achieved the university’s English proficiency. She also applies your younger siblings to private high schools around the US! You can contact her at firstname.lastname@example.org.