<p>i registered to take the US history and chemistry subject tests in may, and i registered for math II in june. i just decided that i'm waaaay too stressed/busy to study for us history for may, and i want to do it in june instead. </p>
<p>however, it's too late to change my admission ticket or add the test on the collegeboard website... but i read that i can add a subject test on the day of the test, so I'm planning on adding the US history one when i go in to take the math II in june.</p>
<p>has anyone had experience with adding a subject test on the day of the test? do they ever "run out of materials" or not allow you do it? </p>
<p>if there is a chance that I will NOT be able to add the USH test on the june date, then I will just toughen up and take the may one.</p>
<p>I’m a bit confused by your post but yes, you can add a test the day of the test and they’ll just bill you for the additional test. I’ve never taken subject tests but I believe you will receive a booklet with all tests included.</p>
<p>The only exception to adding a test is a foreign language with listening, I guess they need to know how much equipment to bring to the test site.</p>
<p>It really doesn’t make a difference if you switch either. Even if you registered for Math II, you could take physics instead. As HighlandMom correctly said, you get a booklet with all of the tests for that test date.</p>
<p>hmm…so for clarification, if you add another test on test day, you get billed for the test that you add. However, do you get billed an extra “late” charge?</p>
but I believe you will receive a booklet with all tests included.</p>