Information regarding undergraduate admissions can be found on this website: http://www.princeton.edu/admission/.
Undergraduate students apply to Princeton University—not to individual departments, programs, or schools. As such, all questions regarding undergraduate admissions should be directed to the Office of Undergraduate Admissions. The process of selecting fields of concentration occurs at the end of sophomore year, once students are enrolled and have the benefit of opportunities to explore their many options with the help of experienced advisers.
Prospective undergraduate students are invited to attend the Fall Open House in November to meet our faculty and students and learn more about our program. More information about the event and an online RSVP form can be found here: http://soa.princeton.edu/content/fall-open-house
Students who are unable to attend the Open House may schedule an individual visit by contacting the School. Unfortunately, due to the large volume of prospective students, individual meetings with faculty cannot be accommodated.