The purpose of this study is to identify the effect size of classroom and branch teachers' opinions related to the teachers' job satisfaction levels. Additionally, the effect size of the studies examining the job satisfaction levels of the teachers was examined according to the moderator variables. Studies, between the years 2000-2018, that include standard deviation, average, sample number data, which examines the job satisfaction levels of teachers according to the branch variable are in the scope of this research. Research is a meta-analysis method used, and master's thesis and doctoral dissertations scanned for Google Scholar database and Council of Higher Education National Thesis Center and peer-reviewed articles published in scientific journals related to the job satisfaction levels of teachers in Turkey were identified. According to the selection criteria, 19 studies were included in the study. The sample of the study consists of 9300 teachers, 4210 males and 5090 females. In the study, random effects model was used to analyze the data. The result of the research shows that the branch has a significant but low effect on job satisfaction in favor of classroom teachers. When the studies included in the scope of the meta-analysis are classified according to the publication type and their effect sizes are examined, there is a significant difference in favor of the article type. Additionally, it was determined that there was no significant difference according to the place where it was done, when it was done, and the job satisfaction scale type used.