Learning quality in schools is the core of efforts to improve the quality of national education. In this view, teachers play an important role as knowledge facilitators, helping students through the learning process and providing an environment that promotes growth and critical thinking. This study aimed to describe how the learning quality in junior high schools of South Papua Province, Indonesia, is predicted by teacher training quality, teacher self-efficacy, and teacher collaboration. We utilized a quantitative research approach with a survey research design to obtain research data from 184 teachers working in junior high schools in South Papua Province, Indonesia. The collected data were thoroughly analyzed using Structural Equation Modeling with Partial Least Squares (SEM-PLS). The results of the data analysis indicate that the quality of learning in junior high schools of South Papua Province was significantly predicted by all the independent variables, both direct and indirect. These findings underscore the importance of fostering teacher training quality, teacher self-efficacy, and teacher collaboration to improve the quality of student learning.