From the start, Tzippora Gold was a smart and loving little girl, with a strong independent streak and tons of energy. During infancy and toddlerhood, her family noticed nothing amiss. But when Tzippora entered preschool, she did not listen to the teacher or sit in a circle. “I had never in my life thought that a three-year-old could get sent to the principal's office,” recalls her mother, Sara Gold of New York City, a graphic designer. “But she was. I pulled her out in the middle of the year because they couldn't handle her. And this was supposed to be a top-of-the-line preschool.”