<p>TOEFL is an English language proficiency test- its basically meeting the requirement that you are more or less good in English </p>
<p>Doing good will not be any + to your application in any way since TOEFL is not a standardized test or neither one that tests aptitude or skill.</p>
<p>If you apply to MIT however you can send your TOEFL score instead of SAT score
That school is probably the only one that accepts TOEFL as a substitute for SAT</p>