I'm trying to clarify a point that helps to advocate for gifted kids, so I can tell my husband this. Can someone clarify the information below?

I thought I read somewhere that a child 2 deviations away from the norm was really far from the other students and a gifted child needs the help just like a child on the other side of the bell curve. Educators understand the otherside of the bell curve because these kids really need help. What would the 2 deviations below the norm be? Does this comparision help clarify the need? I don't think I would bring this up with school. Would you agree?