Hi. You did not submit the text to which this question refers, which makes it impossible for it to be answered. However, I will try to help you as best I can.
To answer this question you need to read the entire text. You'll be able to find the detail that supports the idea that the Cheboygans stood out from the other students at the school, with the sentence showing that they have better academic results, better grades, better understanding of subjects, or any other characteristic that makes them superior in relation to other students.
