Adding an extra test on test day?

<p>i'm planning on signing up for two tests right now. i might take a third but i'm not sure yet. i read that you can take additional tests and collegeboard will bill you for them later. </p>

<ol>
<li>how does this work? is there a bill you get in the mail? can you just pay online after the test? when? </li>
<li>do your scores get delayed if you add an additional test and you havent paid yet?</li>
</ol>

<p>I did this in May, no complications.</p>

<p>On the test day, they provide you with one book containing tests for every subject. After you’ve taken the two, you just say in the room to take the third. You don’t even have to tell the administrator anything special.</p>

<p>You’ll get a bill in the mail. And no–barring any unrelated complications–yours scores are not delayed. Mine weren’t.</p>