<p>Just show up on Saturday and take the IIC instead of the IC. Honestly, they don’t care which test you take; you could take Chinese or Physics or whatever else you want to, for that matter. At the test center they will give you a big book with all of the subject tests, and you just turn to the page with the one you want to take and fill out the answer sheet the way you’re told to so the College Board knows which test you’re taking.</p>
<p>BTW, schools “like” Berkeley et al. don’t necessarily require the IIC. All UCs, as well as Caltech, only accept the IIC (and Caltech actually REQUIRES it); on the other hand, MIT accepts either the IIC or the IC and has no preference either way.</p>