<p>Can I add a letter to the adcom that will explain why I took a certain test (SAT subject) and why I got a certain score in it?</p>
<p>There is an Additional Information section of the CA where you can put comments like this. You don’t state why you need to explain taking the test and the score you got, but if you do choose to make a comment, be sure it isn’t just an excuse for a less than expected score, as adcoms will likely have little patience for such input.</p>