Many schools do not rank, but the high school profile says what percent of the class has a gpa of 4.0 and up, what percent have 3.75 - 4.0 for example. So, the AOs are able to figure out which kids are the highest in the class. Do not be fooled by the no ranking game. The most important thing is how you compare to the kids in your school. Get your high school profile & understand it because the AO compare your app to the info in the profile.