Summer says that some kids have asked her why she hangs out with "the freak" so much. She tells them that August is nice, and deflects when people call her a saint or suggest that Mr. Tushman asked her to be nice. Summer thinks that kids are weird. She explains that she sat with August on the first day of school because she felt sorry for him, but he is just a kid.
Summer's conceptualization of her friendship with August and her reasons behind cultivating it rely on the fact that she's much less interested in being popular than her friends appear to be. Essentially, being friends with August is less of a risk for her because she doesn't care as much about the "consequences."