I went through a battery of tests administered by my school district throughout my school years. In elementary school (1985-91), no fewer than two counselors noted that I showed "autistic" traits, but I was verbal, and the period of time I lost speech as a toddler was dismissed by doctors as (temporary) deafness attributed to the many ear infections I had when I was young.
Despite the fact that I was not labeled as autistic, or anything else for that matter, as a child (I would be diagnosed officially with OCD at 16, and would not know what Asperger's Syndrome was until I was 23), I was still placed in special education as "behavior disordered" (in other words, the "bad" kids, the ones who, as the years went by, attended school only between stints at juvenile hall) because the school professionals felt that I was enough of a distraction to a normal learning environment to be segregated - things like being unable to "just ignore" students tormenting me because of my differences (I would automatically start crying in this and other stressful situations, something I could not control), my daydreaming when I should have been focusing on my studies, my difficulties with group situations, so on and so forth.
Pensieve, you bring up an interesting point. My assessors initially believed that, because of my lack of eye contact and unwillingness to be touched, I may have been a victim of abuse of some sort, which was totally not true. To this day, I still have difficulty with eye contact, and it's hard for me to accept being touched... but I know why now. 