<p>Here's my situation. I am registered to take the SAT chemistry on June 2.
I'd like to take the Math II as well, but I did not register to take it.
How does standby work and do you think they'll let me take Math II?
What are my chances? I'd like to take it and get it over with.</p>
<p>There is no standby for SAT Subject Testing. All you have to do is tell the proctor that you’re taking an additional test and he (or she) will hand you a billing form for that extra test. All of the Subject Tests are given to you in one booklet, you can choose to take as many as you want.</p>