Several studies confirmed the importance of career education interventions since childhood. This study aimed at testing a career education intervention designed for middle school students, conducted, after a specific training on Social Cognitive Career Theory, by students’ teachers. The career conceptions were assessed in both experimental and control groups through the Conceptions of Career Choice and Attainment protocol before and after career education intervention. Result showed that. starting from the same level and increased their conceptions after the intervention. Experimental group increase, in a statistically significant way, more than the control group.