You will be able to adjust status (receive a green card) even if you fall out of status before your husband's petition will be approved. The problem might arise if, for any reason, USCIS would deny your husband's petition or your I-485 application - then, with a lapsed F1, you will find yourself an illegal alien. Sorting out this kind of a case can take a couple of years; and, take my word for it, you don't want to spend them in removal proceedings. Another frequent scenario involves falling out between the spouses. Nowadays, all new marriages are fragile, and more than 50% of them fall apart within the first 2 years. It is seldom pleasant; but when one of the spouses is an alien and her ability to remain in this country depends on the good will of the American citizen spouse, things tend to turn just ugly. If you retain your student status throughout these 2 years, until you receive a permanent green card, you will be able to go back on F1 if your marriage does not survive. Finally, staying in school and getting your degree has its own rewards that are well worth the effort, even if it does not feel that way now. So, if there is any possibility, stay in school, and stay in status.
Answered on Sep 11th, 2013 at 3:01 PM