<p>So I'm a freshman who hasn't attended orientation yet. Since I'm going to be an engineering major I've gotten a 5 on AP Chem and Physics C Mechanics. This means that I can petition for exemption from Chem 20A and Physics 1A. So naturally I want to do this since I don't want to repeat a course which I already know (even if it will boost my GPA). How does this petitioning work? Do I just show them my scores and thats it or do I have to take some kind of test?</p>