Exactly this.
Before taking it, I had 1 bad year of college where I never went to class and never focused. Then I transfered colleges, got my GPA up and my second year I finished with a 3.5 with no meds and I have an I.Q. in the genius range. So its not about being dumb and they make you smart.
Since being on them, I have a 3.8 GPA at a very good engineering school (which is a tough major anyway). It helps people like me with focus and concentration problems combat them. It isn't a miracle drug that makes people smart. An idiot on adderall is still an idiot.
But to this poster, you're going to want them in college too. It is harder to stay focused when you have the choice to go to class, let alone all of the distractions while in class and the intense amount of work and reading.