The purpose of this study to determine the problems of poor Organizational Citizenship Behavior (OCB) of Teachers. The independent variables in this study are Transformational leadership, Interpersonal Communication, and Work Motivation. The selected sample amounted to 216 teachers on Islamic Junior High School in East Jakarta. This study used Mixed Method with Sequential Explanatory, started with a quantitative method then followed with a qualitative method to get a more profound result and more comprehensive result. Further, Scientific Identification Theory of Operation Research in Education Management (SITOREM) is used to rank the hierarchy of improvement.

The results of this research indicate a significant positive relationship between: (1) Transformational Leadership with Organizational Citizenship Behavior (OCB), with correlation coefficient ry₁ = 0.518 and coefficient of determination r²_y1 = 0.268 (2) Interpersonal Communication with Organizational Citizenship Behavior (OCB) with coefficient correlation ry₂ = 0.639 and coefficient determination r²y₂ = 0.408 (3) Work Motivation with Organizational Citizenship Behavior (OCB) with coefficient correlation ry₃ = 0,356 and coefficient of determination r²y₃ = 0.126 (4) Transformational Leadership, Interpersonal Communication and Work Motivation together with Organizational Citizenship Behavior (OCB), regression equation = 32.07 + 0.153 X₁ + 0.425 X₂ + 0.182 X₃ with correlation coefficient ry₁₂₃ = 0.704, and the coefficient of determination r²y123 = 0.496 indicating that the percentage of contribution of independent variables collectively to the dependent variable is equal to 49.6%, while the rest of 50.4% is influenced by other variables not included in this research model. The results of this quantitative study are also reinforced by qualitative research.