<p>Assuming that your college allows you to skip some courses with your AP credit (some may require a score of 4 or 5 to skip):</p>
<p>For courses which are not important prerequisites to other courses (probably history, English, and chemistry for a mechanical engineering major), skip if allowed and enjoy free electives in place of them.</p>
<p>For courses which are important prerequisites to other courses (math, physics for a mechanical engineering major), find the college’s old final exams (sometimes on-line) and try them. If you know the material well, skip. If you do not know or struggle with the material, retake.</p>