Providing front-line, case-by-case support for those diagnosed with Level 1 ASD. ASO is a registered charity founded in 2000 by parents of children with Level 1 ASD (including those previously diagnosed with Asperger’s Syndrome under the DSM-IV) and concerned professionals. ASO is the only agency in Ontario, Canada that is solely devoted to serving those with Level 1 ASD, their families and other interested individuals.