Federal law mandates that students with autism and other handicapping conditions receive educational services designed to meet their individual needs according to the principle of "Least Restrictive Environment" (LRE), the legal standard for providing a free, appropriate education. Students with autism typically demonstrate significant deficits in the area of socialization and interaction. They do not naturally know how to share, make friends, or interpret the facial expressions and emotions of others. Conversational skills may be weak or lacking. Many have difficulty generalizing skills from...