<p>Here is [Purdue’s</a> AP chart](<a href=“Learn about Purdue University - Undergraduate Admissions - Purdue University”>Learn about Purdue University - Undergraduate Admissions - Purdue University).</p>
<p>For AP Calculus, if you get a 5, it would be a waste of time to start over. Either take the more advanced course recommended by the school’s math department, or start over *in the honors freshman calculus<a href=“Purdue%20Math%20181,%20182”>/i</a> if you want to learn the material with more theory. Students very confident in their math ability may choose to jump directly into the more advanced honors courses. If you get a 4, then you need to think about how confident you are in your calculus knowledge in terms of whether to advance ahead or start over (Purdue gives no subject credit for a 3 or less).</p>
<p>For the science courses, check with the departments in question and your major department for recommendations on whether to advance ahead or start over. If you get a 5 and have to start over, you may want to consider the honors version if offered.</p>
<p>Advancing ahead effectively gives you additional free electives, though if the course is a core requirement for the major and the university course goes into more depth than the AP syllabus, you may want to retake it (possibly in the honors version if offered). Note, however, if you are pre-med, medical schools do not want to see AP credit used for pre-med requirements, so you may have to retake the courses, or take more advanced courses in the pre-med subjects.</p>