Can I switch my test when I'm taking it?

<p>I signed up for two SAT subject test: US history and Physics. I want to switch physics to math II. When I'm taking the test, can I just fill in the Math II bubble instead, and I'll just be taking that test?</p>

<p>Yup, that's how you switch your test. Just fill in the Math II bubble and proceed with that exam instead of physics.</p>