Yes! After your first class you will receive an e-mail with the option of extending your enrollment to either 8 or 12 weeks. You will have until your second class to upgrade your enrollment. If you are past your second week, you are welcome to re-enroll for 4, 6, 8 or 12 weeks to continue with your classes.
Farsi, Hindi, Japanese and Polish have set enrollments in 8-week increments and do not have the extension option.