<p>I don’t know much about language but for math science related things.</p>
<p>Basically, if your placement exam goes all wrong and you have AP credit, it isn’t difficult to get placed into a higher class if that is your desire. In other words, you get to choose what will give you more (or anything less than that…).</p>
<p>For physics, AP credit is ONLY for the “12000” sequence (e.g. this won’t count for Physics OR Chemistry majors though it works for anything else).</p>
<p>For math, AP credit can get you out of 15100/15200 (1st/2nd quarter of calculus) but the placement exam can place you as high as 20700 (Honors Analysis).</p>
<p>For chemistry, AP credit can get you out of General Chemistry. Many forgo AP credit and take Honors General Chemistry (and find it difficult…).</p>