Right before Thanksgiving break, students choose classes for next semester. On Spire, you are given a time slot when you are available to enroll. This time is randomized, but varies depending on what year you are in and how many credits you have taken. Prior to actually enrolling in the classes, you are able to add them to your “shopping cart.” People do this to organize what classes they want to take so that, in the event they are unable to take a class they wanted, they have an back-up at hand to sign up for instead. It can be stressful figuring out what to take, especially if you’re an underclassman or if you have too many classes that you want to take in your "shopping cart."