urpose: The aim of this study was to model the positive development of adolescence based on self-regulation, social competence and parental bond with the mediating role of perception of school atmosphere. Methodology: The research method was correlation based on structural equations. The statistical population included all female high school students in Tehran who were studying in 2019-20. Using cluster random sampling method, 400 students were selected as the research sample. To collect data from the Geldhof Adolescent Positive Development Questionnaire (2014), the Self-Regulatory Questionnaire Moilanen (2007), the Felner Social Competence Questionnaire (1990), the Parker Parental Bonding Questionnaire (1979), and the Trickett & Moos Atmosphere Perception Questionnaire (1973) was used. Data analysis was performed using structural equation method using lisrel and SPSS software. Findings: The results showed that the research has a good fit and the positive development of adolescence can be predicted based on the variables of self-regulation, social competence and parental bond with the mediating role of perception of school atmosphere and the research hypotheses were confirmed. Overall, the results show that to predict the positive development of adolescence, we can emphasize self-regulation, social competence and parental bond with the mediating role of perception of school atmosphere and the obtained model can be used in teaching positive adolescent development. Conclusion: The development of self-regulatory variables, social competence and parental bonding is the best way to prevent problems related to the development of adolescent behavior and promoting these components and their education and improvement can be very effective in forming a positive adolescent development.
