Holding the title as one of the nation's biggest "party schools" puts a lot of emphasis on substance use, especially alcohol. Alcohol is definitely the substance of choice at Arizona State and the most influential, as many students hit the nightlife scene on the weekends. The majority consists of drinking, drinking, some drug use, and more drinking. Usually drugs come into play when a major rave rolls into town or a major party is about to throw down. Other than that, low-key drugs like marijuana are usually what most people would see rather than the hardcore drugs. Marijuana is prevalent during kick-backs, some dorm parties (if you can keep it hidden), and at random places. It's one of those drugs that is generally more common. Granted, not everyone is wacked out on drugs or will even come in contact with it. It just depends on who you hang out with and what their character is like.
Drinking and drugs will always come into play at any large party school. If that is your scene, you'd better believe you will not have any problems running into those who can hook you up. Since ASU is a dry campus, drugs and alcohol are not allowed, and if a student is caught with any substance, the consequences can be severe, from a criminal record to expulsion—it all depends on the nature of crime. Those caught drinking underage will usually come out of it with an MIC (minor in consumption) that will go on your record, and of course if drugs are involved, there will be more serious consequences. Obviously, there is a price for these kinds of choices, and ASU does not take these violations lightly.