The aim of the current study was to compare the Wechsler Intelligence Scale for Children-Third Edition, UK adaptation (WISC-III[superscript uk]) scores of Indian primary school children when Indian and UK norms are used. The sample consisted of 300 primary school children, within the age range of 6 years to 10 years and 11 months. The children were assessed using Children's Behaviour Questionnaire (CBQ), NIMHANS Index for Specific Learning Disabilities and WISC-III[superscript uk]. The children scored 16, 21 and 20 points lower on Verbal, Performance and Full Scale scales, respectively when UK norms were used. The findings emphasize the need to establish national/regional norms for assessing intelligence of children in India. (Contains 1 table.)