need help choosing a subject test

<p>Hi. I'm am not sure what SAT subject test I'm going to take. I recently moved to America so whatever I studied is a little different than what we learn here. I've already studied physics in my old school and took bio and chem in America. </p>

<p>I want to take bio and either chem or physics or all three SAT subject tests.</p>

<p>I want to know if it's enough to study the Kaplan book for chem and physics. I went through some of it and am a little freaked out by physics because I didn't learn some of the things there. </p>

<p>Can someone tell me if the Kaplan and princton books are good enough to study for the physics and chem subject tests? Because if they are, then I don't have to restudy my whole text book (omg... ) and a review would be enough since I know most of the content.
Please tell me soon since I'm going to register it in the next few days and need to know. And thank you in advance to everyone for your help. I really appreciate it.</p>