<p>I initially signed up for Physics but I also want to take Math IIC tomorrow (its friday here). Am I allowed to take another test and pay it later? And does any one know what procedure I must go through to make this happen?</p>
<p>Put a check next to be math and physics on the SAT II test booklet. The college board will just bill you for the additional test if you only paid for one during registration.</p>