You need to re-post your question under immigration law and related headings. You've only tagged "marriage"--qualified attorneys will likely not see your question on this board.
We do not have an attorney-client relationship. I am not your lawyer. The statements I have made do not constitute legal advice. Any statements I have made are based upon the very limited facts you have presented, and under the premise that you will consult with a local attorney. This is not an attempt to solicit business. This disclaimer is in addition to any disclaimers that this website has made. I am only licensed in California.
When you say you are "international student" I do not know if you are/were an F or a J. Assuming you have no other issues with your status other than dropping out of school, and you had an F-1, and you want to become a LPR ("green card"), your US citizen wife can petition for your permanent resident status. If you were on a J-1 and there was a residency requirement on the visa (2 year back in your home country) then you cannot get your green card through your wife until you have satisfied the 2 years or get a waiver. You should consult an attorney to thoroughly discussion your options and potential road blocks due to your violation of status by dropping out of school.