<p>I'm already registered for the regular SAT. Yesterday, I wanted to register to an SAT Subject Test on the same day but collegeboard told me there was no date available. Was it just a collegeboard problem or because I simply can't register to both on the same day?</p>
<p>My understanding is they won’t allow it. And for your own benefit I think. After about 3 1/2 hours of sitting and focusing most kids are pretty beat up.</p>
<p>The Subject tests and the Reasoning Test are offered at the same time on these dates, and, unless anyone has invented a way to be in two place at once, we are currently able to take only one or the other. (However, you can take up to three subject tests in one sitting, as they are only an hour long.)</p>