The main purpose of this study is to synthesize the researches by using meta-analysis methods (random model) on relationship of teachers' organizational citizenship behavior in elementary and secondary schools. The researcher analyzed the correlation coefficient effect size and standardized mean difference effect size by collecting data from 9 theses and journals published (N=4,999) during 2000-2010, and the effect sizes were calculated by Comprehensive Meta Analysis software. The main findings of this study: There is the significant correlation between teachers' organizational commitment and teachers' organizational citizenship behavior. As a result, some suggestions are provided for school leaders and future research.