The purpose of this study was to investigate the role of organizational trust, teacher collaboration, and participatory decision making in teaching Activities with Mediation Role of Self-Efficacy (structural equation modeling). The research was conducted within an applied framework and in terms of implementation descriptive-correlative of structural equations. The statistical population of research were all elementary teachers in West Azarbaijan province, Iran (n=11522), which among them 376 people were selected as sample through Cochran formula and multistage clustering method. The data collection tools included questionnaires of trust, cooperation and corporate decision making, teaching, self-efficacy. The research data was analyzed SPSS and LISREL software. The findings showed that in addition to trust, the direct effect of Collaboration among Teachers, participatory decision-making, self-efficacy on meaningful teaching were significant, Except Participatory, trust and decision-making in teaching with mediation role of Teachers' Self-Efficacy were confirmed Therefore, it is necessary to create conditions for teachers' self-efficacy.