Early adolescent (10-13 years) is characterized by hormonal changes and accelerated physiological growth. Significant risk factors for the physical and mental health of children and adolescents include, among other things, disordered eating patterns, overweight and reduced physical activity, low self-esteem and negative body image.~In Favor of Myself is a preventive intervention program. The program's primary goal is to increase adolescents' self-esteem and to prevent negative self-image and body image, as well as to development media literacy. In this study, the investigators will focus on the Young In Favor of Myself  program, designed for ages 10-12, grades 5 and 6, and its main goal is the development of self-care behaviors, media literacy, positive self-esteem, and body-image. To increase the effect of Young In Favor of Myself  program, on the adolescents, the investigators have developed a teacher component as an addition to the school-based intervention, usually delivered by college students. The study will first assess the teachers' influence on the program, and then evaluate the difference in adolescent outcomes from the program with or without this supplement.~Results will be measured using the study questionnaire, to be filled out by the participants (both teachers and adolescents) before, after, and three months after the completion of the program. The questionnaire will include validated questionnaires with good psychometric qualities. The study protocol was approved by Tel Hai College institutional review board. Parents of all participants, in the intervention and in the control group, as well as teachers involved in the program, received information about the program and the study and were asked to provide informed consent.
Cluster-Randomized Clinical trial, which includes the development and activation of an intervention program among young adolescents and their teachers. Study hypothesis is that the intervention program will yield improvement in adolescents whose teachers participated in the program, in comparison with the adolescents whose teachers weren't involved in the intervention. Results will be measured using the study questionnaire, to be filled out by the participants before, after, and three months after the completion of the program. The questionnaire will include validated questionnaires with good psychometric qualities. The study protocol was approved by Tel Hai College institutional review board. Parents of all student participants in the intervention and in the control group, as well as teachers involved in the program, received information about the program and the study and were asked to provide informed consent.