<p>I've applied to take Maths IIC and that's the test info. on my admission ticket. However, I'd like to switch to Maths IC. Do I have to inform CollegeBoard about that before the exam, or can I switch on the day?</p>
<p>You can switch on the day</p>
<p>yeah i signed up for math1c but i never intended to take it...it's not binding, if you signed up for math2 you can switch to chemistry or literature, there's no restriction. im not sure about adding additional tests, though. i know for sure you can't switch to listening tests.</p>
<p>You don't have to inform them. Also, you can add a test on test day, CB will just add the charge to your fee.</p>