<p>What’s the difference between Math Level 2 and Math Level 2C? Is there one? The Common App website asks you to select SAT Subject Tests that you have taken/will take, and they are two separate possible answer choices. I think I just signed up for Level 2, but I don’t remember there being a 2C option… Is 2C an older version of the test or something?</p>
<p>Oh, and there’s also 1C as well as 1.</p>
<p>Weird. I don’t think it matters. Even so, you signed up to take the test, and that’s what matters. CB doesn’t register what test you select (unless it’s a language test) - it just takes note of how many you signed up for. So if you signed up for USH and decide to take bio instead, you can just mark bio on your scantron the day of the test. During the June test, there wasn’t a IIC option on my answer sheet, so you should be fine.</p>