While I can't speak to the actual numbers you gave, the neuropsychologist that tested our DS did say that you would NEVER expect a child 2 standard deviations below the norm to be successful in a regular classroom so why would we expect a child 2 standard deviations above the norm to be successful?

This has helped our close family and friends understand the accommodations we desire for our DS.

Mom to DYS-DS6 & DS3