Just so people don't get too tied up with this IQ/SAT/ACT correlation idea...
I took the ACT 3 times and achieved a whopping 24 each time. It was a little discouraging to say the least. I knew I was a smart kid, but that exam really shattered my confidence. However, I have done exceptionally well as a college student. I've maintained nearly a 4.0, tutored physics and chemistry, taught O-chem as a TA, published research, and more. When the MCAT rolled around I thought I was going to be doomed, just as i had been on the ACT, but I managed to swing a 35! I work hard, but I don't see myself working any harder than many of my peers. I have a friend who was a HS valedictorian and nailed a 31 on the ACT. He currently has a 2.8 and isn't sure if he can get into chiropractic school. Granted there are correlations, but that's all they are. Moral of the story is, don't let an exam score get to you and define what you believe you are capable of.