<p>I think the best way to demonstrate interest (and this is in general for any school) is to write about what about the academic program you are applying to interests you. For instance, my son, who was accepted OOS to Michigan (and UNC Chapel Hill) wants to major in Classics. He was able to find info on Professors whose interests are similar to his, and he specifically mentioned this in his essays. I also advise any of you reading this post to avoid mentioning how a school’s architecture, weather, or quality of academics drew you to the school. The first two responses have no meaning, and the last answer is too vague.</p>