If I signed up for a specific test, is it okay to take a different one during test?

<p>So I signed up for MATHII but then I'd rather do US history, will CB accept it?</p>

<p>Like I'm not gonna do math during the SAT 2, gonna take us history instead that day</p>

<p>Yes, you are allowed to do that.</p>

<p>As pp said yes, it doesn’t matter which ones you sign up for. You can choose which ones to take when you arrive on testing day. The test book includes all of the subject tests</p>

<p>You can even take a different number of tests. If you take fewer than you signed up for, you’re just out the money. If you take more, you get billed later.</p>