<p>Is there another time that the math class meets with other than the time you’re looking at, but with a different professor? Usually math and science courses have two or more separate sections, with different professors teaching each different section (for example, math 21A has sections A, B, C, D, E, F, and G, all taught at different times and with different professors, and the BIS 2 series has sections A and B. And of course, each section is broken into smaller subsections for labs/discussions). </p>
<p>What you need to do is decide which class is more important–the math class you’re trying to waitlist into or the class that’s already in your schedule. If the class that you’re already enrolled in is a class that is only offered that quarter, then don’t drop the class, and instead take the math class during winter quarter instead (there is no harm in starting your math and science courses a quarter late). </p>
<p>Is the course you’re already enrolled in a high demand course? What I mean by this is, if you briefly dropped this course on sisweb in order to waitlist the other course, but you see your waitlist number is #30 and you decide it’s not worth it to waitlist (because for math courses, it’s extremely, extremely unlikely that 30 people will drop the course within the 20-day drop period), if you were to re-add the class you were previously in (you should keep the CRN of the course you’re already enrolled in handy so you can just copy and paste it in quickly), would that spot still be open (therefore it isn’t in such high demand) or would you foresee someone else taking your spot as soon as you drop the course just to check your number on the course you want to waitlist into?</p>