Reagan Floyd was diagnosed with autism spectrum disorder and a mild intellectual delay when she was about 2 years old. She gets the special teaching she needs to learn how to take care of herself and educational skills, such as reading, writing and math, in one of the Hall County School System’s three self-contained classrooms for autistic students. In 2002, Hall County schools had about 17 students who met the federal definition of autism, said Karen Schaap, the district’s autism facilitator.