Withdrawal is the official term for dropping a class. If you want to stop attending, it's your responsiblity to complete the formal withdrawal
process, by logging into MyPortal and following the online procedure to drop a class.
For a standard, 12-week class, you can drop during the first two weeks of the quarter
and have no grade recorded. However, if you drop after that, you may still receive
a W, I or other undesirable grade. A W grade doesn't affect your GPA, but it will
apply toward the number of times you can take a class, which is generally limited
to three attempts.
The deadlines to drop a class and have no grade recorded will vary for summer classes
and other classes that are less than 12 weeks.