<p>
</p>
<p>If you want to know class sizes, you can look at the on-line schedules at each school.</p>
<p>Berkeley uses a multi-phase preregistration system, where everyone gets to preregister for about half of his/her classes in the first phase, which means that students generally do not have trouble getting classes they need for their majors (if they are not too picky about time of day and the like – early and late sections tend to fill last), although getting into popular out-of-major classes can be more difficult. Classes also reserve space for students majoring in majors that require them.</p>
<p>Office hours tend to most crowded just before and just after tests.</p>
<p>In Berkeley College of Letters and Science, only a few majors (marked with #) require a higher GPA to declare (although it seems that they have not updated the page to add the # to computer science and statistics): <a href=“http://ls-advise.berkeley.edu/major/majorlist.html”>http://ls-advise.berkeley.edu/major/majorlist.html</a></p>