Developing social competence of madrasa teachers is increasingly popular in the classroom, but of these teachers, mixed results (without clear reasons) are reported. This study aims to see if increasing the use of problem-based learning (PBL) by "madrasa aliyah" or senior high school teachers in Indonesia increases their social competency in education. This study employed a quasi-experimental technique and data from PBL intervention program to investigate how PBL is connected with teachers' social competency and was analyzed using a t-test. In general, the social competence of "madrasa" teachers is solely treated as a predictor of the practice of teaching Islamic religious education. Still, we discovered that the greater use of PBL in learning can favorably affect the social competence of madrasa teachers. PBL is positively associated with student involvement and teaching in learning among the madrasa teacher social competency subscales. However, according to data analysis, students' favorable responses to Islamic religious education learning practices can moderate the link between PBL and the social competency of "madrasa" instructors. This study has significance for the PBL model's growth in strengthening the social competency of madrasa teachers learning Islamic religious education.