Curving SAT 2s?

<p>I know the SAT is curved accordingly, but are SAT 2's as well? I don't understand how the curving works. Can anyone please explain it to me? </p>

<p>Lastly, when do you think is the best time to take Math 2, Bio, and the SAT? Are there any trends that show when the "800" score was higher or lower? I'm lost. Thanks :)</p>