<p>The formula is based on an equation which requires you to have a class size of at least 300 (and be number 1) to achieve a CRS of 80. </p>
<p>If you are ranked 3 in a class of 250-299, you will receive a CRS of 75.</p>
<p>If you provide only a GPA, a 3.9-3.99 will yield a CRS of 75. (You need 4.3 and above to receive an 80). </p>
<p>The systems people use a few equations to calculate your CRS, but basically, you can calculate it using simple tables. And of course, the other two parts of your AI are three subject tests (750 average = 75) and your SAT I Reasoning (800 average = 80). </p>
<p>This difference is known to the admissions officer, and they manually knock your AI down if they see an inflated GPA / are unable to tell if you are among the best in your class.</p>
<p>216… But it was kind of cheating, because I haven’t taken 3 SAT IIs yet so I just put my writing score from the SAT. And my school doesn’t rank or calculate GPAs so I had to guess.</p>
<p>Oh well, I hope admissions officers simply like me :).</p>
<p>I got a 223/7 by using GPA, and a 210/4 using “top 10%” even though I am supposed to be ranked #1, but our school doesn’t rank haha…I like how it warns you that you are not guaranteed admission into an Ivy!</p>
<p>I don’t know exactly how accurate this writer’s information is, but here’s an interesting discussion including his version of the history of AI and its use in Ivy athletic recruiting. Again, I don’t know how current or accurate this post is.</p>