Introduction: The importance of the perception of one’s potential, of who one is, and of what can become, is decisive in the development of personality, especially in adolescents.Objective: Analysis the psychometric properties of the García & Musitu’s AF5 Self-Concept Scale in a sample of high school students in the city of Lima-Peru.Material and methods: The study participants were 646 school children (312 boys and 334 girls), ranging in age from 11 to 17 years old (M = 13.95, SD = 1.62). The Garcia and Musitu self-concept scale (AF5) was administered and exploratory and confirmatory factor analysis was performed. Data analysis was done with the programs Factor Analysis (version 10.9.02) and R (version 4.0.2).