The school provides specialist education for seven to 19-year-olds with Asperger's, higher functioning autism and associated disorders.

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In 2006, he underwent about eight hours of tests, which helped a clinical psychologist conclude that Sheppard had high-functioning autism.

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The pair are highlighting the condition as part of a BBC South series into people with high-functioning autism and Asperger syndrome.

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While doing autism evaluations in Salt Lake City, where she got her doctorate, she identified many adults as having high-functioning autism in their 30s, 40s and 50s.

CNN: With autism, no longer invisible

Androgyny has also recently been associated with high functioning autism.

FORBES: Is Being Female Protective Against Autism?

Aspiritech, a nonprofit Chicago-based company, launched a program to train high-functioning people on the autism spectrum to test software for tech development companies.

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Dr. CORDER: Autism is a diagnosis that is a delay, a significant and progressive delay in neurological functioning, cognitive functioning and social skills.

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