My difficult child is on the autism spectrum. About a year ago I made note of the range of his functioning. I termed these as: Unable to perform: (academically/behaviorally; requires constant support to maintain safety) 30% of the time. Mixed ability: (with support can perform some tasks and be redirected to adequate behavior) 55% of the time. Able: (able to perform tasks and behave appropriately) 15% of the time. His teacher is struggling to accept that sometimes he cannot perform. I am hearing from professionals that this variability is not uncommon in children on the spectrum. Do you find this variability in your child?