Summer Sessions at UC Santa Barbara offers open enrollment to all qualified domestic and international university students. In order to enroll in Summer Sessions' courses, you must have the proper F-1 or J-1 visa. You will need to obtain an F-1 Student Visa to enter the United States. The I-20 Form is required in order to obtain an F-1 Student Visa. Visiting International Students from outside of the US must obtain the Form I-20 from UC Santa Barbara and enroll in a minimum of 6 units to achieve full-time student status. International students visiting from other US institutions who already have an I-20, including other UC campuses, or taking only online courses in the summer term are not required to obtain a Form I-20 from UC Santa Barbara.