What kind of questions do they ask?
How important is the interview to my application?
You might expect questions like, “Why Princeton?” as well as questions about your interests and goals. Beyond that each interview is very different and for many the interviewer will talk about their own Princeton experience. Since Princeton can not guarantee interviews to all applicants, it plays a very small role in your overall application. Enjoy it and see it as an opportunity to work on interviewing skills which you will certainly need later in life.