Once here, it has nothing to do with their stay being valid. They must register for full-time credit and pay attention to date of expiration on their certificate of eligibility. If their certificate of eligibility is going to expire, they need to get it extended to reflect a new anticipated graduation date. You cannot sign or extend an IAP-66 issued by another sponsor. A student wants to travel home for a visit during Christmas.
Signatures are generally good for one year.
To get an extension, the student must bring a letter from the department indicating why the degree has not been completed and when the degree will be completed. A student holds a dependent visa. E-2 and so on. A visa normally is a stamp placed in a passport by an official of the United States. It should have a date upon which the visa status was granted and a date to which it is valid.