Students who make the mistakes of underage drinking, drinking too much, or are found in possession of illegal drugs, such as marijuana, risk being expelled. It isn't necessary that charges are brought or that a student is convicted. It's enough for a dean of the school to decide that the student has misbehaved to invoke the right to expel.
If you are arrested, however, the costs of a mistake are high. Drug crimes put a student's federal student aid at risk.
Many times, a student arrested for possession of an illegal substance or underage possession can be resolved without a finding of guilt if the student qualifies for first offender status under Virginia law.