Most children who get hurt at school can tell their parents what happened, but what about those who cannot? Twelve-year-old Carmen Maggiore is autistic and cannot communicate verbally, so when his mother, Linda Auger, noticed deep purple bruises on her son's arms and abrasions on his upper chest, lower back, and buttocks, she couldn't ask him to tell her what happened. Auger, who lives in Braintree, Mass., believes her son suffered what many parents dread: abuse at the hands of his former teacher, an adult Auger trusted with Carmen's well-being and education. The teacher has said no such abuse took place. It's an example of the difficult circumstances that parents and schools face when trying to sort out whether abuse occurred in a classroom.