You must apply to the Immigration and Naturalization Service for reinstatement to F-1 student status if you have lost your F-1 status by any of the following actions:

• You did not carry a full program of study
• You did not attend school during a fall or spring semester, unless you were excused for medical reasons
• You remained in the United States beyond the time authorized under duration of status and did not apply for extension of stay
• You violated the immigration regulations in any other manner