<p>Lets say that on test day, I want to take US History instead of Physics. Is that allowed? Am I allowed to bubble in the US HIstory thing even though my card will not have me signed up for US History? A couple of people tell me yes, but I dont see how that will work since on my account, I am signed up for Physics.</p>
<p>Yes, you can change your test on test-day. You do not fill out the official registration form for the individual test until you are in the test facility and about to take it.</p>
<p>And does each testing site have all the tests? Is there a risk of showing up only to learn the site doesn’t have the test you didn’t register for but now want to take? </p>
<p>Maybe all the tests are in a single booklet. Anyone know?</p>
<p>They are all in the same booklet, but when I looked some of them were missing, so I’m not exactly sure how that works. About changing tests, there’s more information in the pinned thread at the top.</p>
<p>If I were to “walk-in” as a standby, are there forms that I should fill out before arriving at the test center? Also, how much money should I bring? Should I bring a check? A credit card?</p>