Autism Spectrum Disorder is defined to be a range of pervasive developmental disorders that adversely affects a student's functioning and results in the need for specially designed instruction and related services. Autism Spectrum Disorder is characterized by an uneven developmental profile and a pattern of qualitative impairments in social interaction, communication, and the presence of restricted repetitive, and/or stereotyped patterns of behavior, interests, or activities. These characteristics may manifest in a variety of combinations and range from mild to severe. Autism Spectrum Disorder may include Autistic Disorder, Pervasive Developmental Disorder Not Otherwise Specified, Asperger’s Disorder, or other related pervasive developmental disorders. The corresponding definition is found in State Board of Education Rule 6A-6.03023, F.A.C.