TWO (2) WEEKS, before you wish to travel outside the U.S. you may get this form from ISS. In order to sign your I-20 or IAP-66 form to allow you to travel, ISS must verify all your information, sign the existing I-20/IAP-66, or prepare a new immigration document if needed to revalidate an expired visa. The signed document should be ready for you to pick up a couple of days later.
Complete the upper half of the form and give it to the Assistant to the Graduate Program Director for her to prepare for the Graduate Program Director to review and sign. When the form is signed, the assistant will send you an email to let you know it is ready for you to pick up.