If you stop showing up towards the end of the semester
If you don’t attend a class during the last part of the semester, and you don’t officially drop the class, you’ll receive an F in the class. If your lack of attendance is due to extenuating circumstances, it is your responsibility to contact your instructor to discuss your options (which may include a grade of Incomplete (I)).
Failing to officially withdraw from a class can also affect your financial aid eligibility.