This study aimed to investigate the predictive validity of academic grades and G-36 scores in personnel selection. The sample was compose by 83 individuals from public organization with mean age of 22.01 (SD=2.99) years old, being 81.9% males and 91.6% with eleven years of education (High School at least). Pearson correlation and regression analysis were used to verify the association between training performance and both predictors. Significant correlations were observed between variables range. Linear regression indicated a shared variance of 23.0% between G-36 and theoretical disciplines results. New research could be development to investigate the contribution of knowledge tests to personnel selection.