<p>My D is a student at USC, and S graduated from USC. She says that nearly all her courses are taught by profs. She has been taught by a few adjuncts. TAs run discussion sections and serve the profs. She is in cinema. I believe S had similar experiences. He was in engineering.</p>
<p>She isn’t sure about whether there are TAs used more often in other fields, like perhaps liberal arts, math or science, particularly in lower level courses. The courses she took, she’s quite sure were taught by profs.</p>