This study compared performance on the WISC with school grades in na attempt to improve the diagnostic and predictive capacity of the test in Brazil. Twenty students (10 from a public school and 10 from a private school), attending the fifth through the eighth grade, 8.7 to 13.2 years old, from a group classified as having high performance participated in the study. There was no significant correlation between the WISC results and school performance. Comparing the schools, the students from the private school network obtained scores significantly higher in Comprehension, Vocabulary, and Coding. However, no significant difference was found with respect to grades. This finding was explained based on the peculiarities of school programs.
WISC; intelligence evaluation; psychometric tests
