<p>If you listed AP courses on your app, then yes you need to take the tests. They will be expecting you to complete the course and submit the exam results - we know this first hand from last year when my son was accepted SCEA - we contacted admissions and this is the information we were given. </p>
<p>FWIW, you need to weigh carefully whether you will use AP courses to place out of courses. Be aware that at least with math courses, the AP courses will allow you to place out (AP Calculus AB for MAT 103 and AP Calculus BC for MAT 104) however they do not cover the material nearly as thoroughly as the courses Princeton offers. It’s quite a common practice, from what I understand from my son, for students to take the AP courses and then still take the Princeton courses that they would place out of (my son did this also). A number of students in his physics class already took AP Physics, for example. For them it serves to alleviate some of the stress of transition that most students experience adapting to life at Princeton - particularly the varsity athletes (such as my son). </p>
<p>Some students use AP courses to place out of classes but most need to work incredibly hard to do the next course effectively. The plus of having completed AP courses is that for the maths I listed above, you can move onto more interesting courses that you would prefer to enroll in. This eliminates the dreaded problem sets associated with the course. However you may need the depth of teaching that Princeton offers if you plan to pursue the subject aread beyond covering a prerequisite. Your academic advisor will help you make that decision in light of your overall course load and committment level in other areas.</p>