Answer:
Of course perhaps that is not solid evidence because most people would probably believe that they are not a bad person; however, other people in the book that truly know Steve's personality attest to the fact that Steve is a good kid. Take Mr. Sawicki for example. He is Steve's favorite teacher and he says that Steve is "talented, bright, and compassionate." Those character traits are absolutely true about Steve, and they are shown concretely in the way that he loves and treats his brother, Jerry.
