<p>It's really going to depend on the individual university's policy, and perhaps which area you are going into. Some universities don't care which SATIIs you take, as long as you take X number of them (usually 2) Some will specifically request at least one math, or one science, etc.</p>
<p>Some schools (4 of the 6 I'm planning on applying to) don't care if you take SAT II's or not. The other 2 recommend taking 2, one in math, and one in another subject of your choice.</p>