It is illegal to possess, use, or sell marijuana. In the City of Ann Arbor, a violation of this law is considered a civil infraction, punishable by a fine of $25 for the first offense.
However, while on the University of Michigan's property, state law is enforced. Therefore, possession of marijuana is a misdemeanor.
This offense is punishable by fines and up to six months in jail. If you are convicted, the court is also required to suspend your driving privileges in Michigan.
It is not uncommon for students to smoke marijuana in their dorm rooms. Because of this, it is not uncommon for housing security to check the halls for the smell of Marijuana. Once marijuana is found in your dorm room, whether you are arrested or not, if it is seized, it will be tested which could take several months.
Therefore, it may take as long as six months before you are officially charged. After that, you will go to court and that process can last another six months.