<p>I'm registered to take Lit, Math II, and U.S. History this Saturday. Is it possible for me to switch my Lit to World History on the day of the test? I heard that you just have to write in the code for World History instead of Lit. Also, do I have to pay to switch tests? Thanks! :)</p>
<p>I’d talk to the proctor, but to my knowledge (I’ve never had to switch tests) you don’t have to. If you paid for 3 tests then you can write any 3 tests you want, besides the listening ones which are more expensive, and it doesn’t matter as long as you write down the correct test code and etc.</p>
<p>Harrovian - great! 
Thank you!</p>
<p>You can do any change at the spot (except for the listening one). You can add, drop, or change any subject test. Check with the proctor would be a good idea although it may not be necessary.</p>
<p>billcsho - Thank you! I’ll definitely check just in case.</p>