<p>In all honesty, a 1 could very well keep you out. You aren’t giving us enough information. If that score is a demonstration of an inability to grasp some subject that is important at MIT (single variable calculus, for instance, or perhaps mechanics), and you don’t show you would be able to handle such coursework elsewhere in your high school career, then the 1 might play a significant role. </p>
<p>That being said, the likelihood of that being the case is low because you’re a freshman, and that leaves you plenty of time to make your 1 factor absolutely nothing into admissions. In fact, it may already factor nothing into admissions at this point if, say, it were on the Music Theory test.</p>