Learning Challenged: are those children who can see, can hear, have general intelligence in the near average, or above average range have educational difficulties that do not stem from inadequate educational experience or cultural factors. These children do not acquire and use information efficiently due to some impairment in perception conceptuallization, language, memory or motor control.

A.D.D.: are those group of children who have difficulty in maintaining attention. Hyperactivity once thought to be the core symptom of this syndrome is not always present and tends to disappear as the child become older, subgroups of children with A.D.D include those with hyperactivity, those without hyperactivity and a residual type.