In this paper, factors related to the intellectual achievement of epileptic children are reviewed. These should be taken into account by medical and paramedical staff when making the intellectual prognosis of each patient. The factors related to epilepsy include: The type of crisis and epileptic syndrome, the aetiology of the epilepsy, genetic factors, age of onset, duration of the disorder and frequency of crises, electroencephalographic alterations, a history of status epilepticus, the antiepileptic drugs and their metabolic effects. The most important psychosocial factors are: The school, the family and the patient's personality. The significance of the multifactorial effects is emphasized.