Published Feb 27, 2009 at 7:00 PM EST Updated Mar 13, 2010 at 4:38 PM EST My son and my daughter are happy, active, healthy children who enjoy school and are lucky to have a solid family life. But they are very different. My autistic son tests in the "severe" range in many subjects. At 8, he reads well but cannot answer basic questions about what he has read. He speaks at a 3-year-old level, adore