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<p>If the school really wanted to give you more $$, they would have done it based on your performance since you have been in college. </p>
<p>It is highly unlikley that they are going to increase your scholarship due to your negligence in submitting the correct set of scores and just discovered 1.5 years later your error. </p>
<p>The school admitted you and granted you a scholarship, based on the information that you submitted. You accepted the offer. You missed the opportunity to request more $$ which would have been at the time of the initial scholarship offer, where you could have said, I scored a 30, which would make me eligible for full tuition, would you consider increasing my scholarship?</p>