Sixty-five institutionalized boy delinquents in Alexandria aged 11 to 21 years were screened for intellectual functioning (I.Q. level) in relation to behavioral deviance. Findings revealed that the mean I.Q. score on the intelligence scale was within the average level of intelligence. The presence of behavior disorder varied insignificantly as a function of intellectual level. Results of this study do not indicate the prevalence of behavior disorders in relation to intellectual functioning in the total population of delinquent children not officially declared. However, the results could be a valid index of the demand for mental health services for the delinquent children, in whom "nonintellectual factors" (familial and psychosocial) might have a significant role in shaping their behavior.