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<p>I would like to believe that many professors at Caltech are committed to do their best in teaching us. Of course, there are exceptions. </p>
<p>In introductory classes in which all 250 students are enrolled, there are usually ~20 students per TA. As you progress in your major, the classes become smaller and you have a professor and a TA for 4-7 students (at least that’s the case with astrophysics).</p>
<p>The professors are rarely unreasonable since Caltech has a survey sent out at the end of each term where students tell/complain (anonymously) how they felt about this or that class so that the following year professors could adjust accordingly. However, even though professors here are reasonable, it is still non-trivial to get A’s and even B’s so be prepared to work hard for a good GPA.</p>
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<p>Don’t worry about the changes - they won’t go into effect for quite some time.</p>