. >> kristine barnett: the students thought i was the student. >> safer: his parents, kristine and michaeled their son would quietly listen and learn, but even they were shocked when jake jumped right into scientific discussions. >> kristine barnett: the professor would ask questions and jake was answering them. and then, he took the final at the end and got an "a" on it, and suddenly the people at the university took notice of that and eventually invited him to attend the university. >> safer: that's pretty shocking, when an eight-year-old aces a university astronomy course. weren't you impressed? >> jacob barnett: i guess i was impressed. i was just doing what i like to do. >> safer: no one could have predicted that jake would even make it to college. just before his second birthday, he began to regress-- stopped speaking and making eye contact. after consulting with several doctors, the diagnosis was autism. >> michael barnett: we went through speech therapy, physical therapy, developmental therapy, occupational therapy. therapists came to the home. >> kristine barnett: he was going fur