<p>if so, which schools specifically want them?</p>
<p>This is on the USC SAT report-
"SAT Subject Tests-
SAT Subject Tests are required of students who attend a high school that is not regionally accredited, including home-schooled students. Others are encouraged to submit these results if they are available."</p>
<p>Here is a table of some schools and their requirements. I wouldn't count on it to be absolutely correct so double check on each school's website/application.
<a href="http://www.compassprep.com/admissions_req_subjects.aspx%5B/url%5D">http://www.compassprep.com/admissions_req_subjects.aspx</a></p>
<p>No, USC does not require SAT II's. The only help you, not hurt you, if you do them.</p>