The U.S. Department of State (DOS) announced in February 2006 that it will allow a student and her/his dependants to obtain their visas 120 days in advance of the start of the academic program.
This statement indicated that an individual seeking initial entry to the U.S. as a student or the dependant of a student, on the F-1, F-2, M-1, or M-2 visa, may be issued a visa up to 120 days in advance of the start date listed on the primary applicant's SEVIS I-20 Form. This does not mean, however, that the student and his/her family are allowed to enter the U.S. 120 days in advance.