I agree. Though you only need one or two "difficult" children in a class for them to take 60% of a teachers time. The pigeon-holing of children in categories is also irksome. I never met an "all-round" genius, and currently schools are not set up to perform to strength. There is no rule saying that a child cannot be in grade five maths and grade two reading at the same time. University is set up with more flexibility, why not school?