This study aims to evaluate the factor structure of Career Decision Self-Efficacy scale-short form in a sample of Italian high school adolescents. confirmatory factor analysis (CFA) was used to test the degree to which a one-factor structure and a five-factor structure provided the best fit. In view of available research the five-factor structure was expected to provide the best fit. Moreover, factorial invariance in males and females was tested. It was expected to be invariant across groups. As expected the five-factor structure showed a better fit than the one-factor model and the factorial invariance resulted invariant across boys and girls. (Contains 4 tables.)