That depends. As an undergraduate student you must have at least 12 credit to be considered full-time. Does your health insurance require you to be a full-time student? Are you paying for school using scholarships or loans that require you to be a full-time student? Are you an international student that needs to be a full-time student for your visa?
It used to be common for health insurance rules to require you to be a full-time student, however that is not always the case anymore. You will need to check with your health care provider to see what are your current requirements.
Just about everyone’s financial aid (this includes both scholarships and loans) is different. Some student have told me that their financial aid was able to be prorated, but that will depend on which scholarships and loans you have. Some students who are paying with loans and already have a job offered lined up have chosen to use their 6-month grace period during their last semester. It is important to set up an appointment with the Financial Aid Office to figure out what is best for you.
If you are an international student there is a form that you can fill out that allows you to have less than 12 credits in your final semester and still meet your visa requirements. For more information contact the International Programs and Services Office.