I don't know where you're going to Law School but the Decision of (U.S. v Miller) was ambiguous at best.
The key paragraph in the decision:
"In the absence of any evidence tending to show that possession or use of a "shotgun having a barrel of less than eighteen inches in length" at this time has some reasonable relationship to the preservation or efficiency of a well regulated militia, we cannot say that the Second Amendment guarantees the right to keep and bear such an instrument. Certainly it is not within judicial notice that this weapon is any part of the ordinary military equipment or that its use could contribute to the common defense. Aymette v. State, 2 Humphreys (Tenn.) 154, 158"
I love how stating that the Second Amendment not guaranteeing the right to keep and bear a "shotgun with a barrell less than 18 inches in length" because of judicial notice that it isn't ordinary military equipment or be used in the common defense" has been extrapolated by anti-gun weenies into something incredibly more. That paragraph meets both the Standard Model and the State's Rights "theory".
If you're being taught different, then I feel sorry for you. There are more than 35 different Supreme Court instances where the justices have cited the 2nd Amendment as an individual right. Including six by the Rehnquist court. The only current judge who hasn't issued or joined an opinion on the 2nd Amendment as a distinctively individual right is Breyer (among those who've issued an opinion).
Since you're on your way to being a lawyer, perhaps you can tell me which of the other Amendments in the original Bill of Rights weren't for the individual. Be specific.