Peer teaching among students has a powerful role in the learning process and has been studied and recognized as an effective teaching method. Research on peer teaching applied in different contexts has shown that learning through the process of teaching others increases students' academic performance. In Indonesia, some research on peer teaching has been conducted, but there has been no research on peer teaching in the context of theological studies. Hence, this empirical study aims to verify whether peer teaching is effective when applied in a theological school setting. In this study, students of a homiletics course were the research sample. Results show that peer teaching had a positive effect on students' academic performance. However, further research is recommended on the application of peer teaching in other subject areas to confirm the effectiveness of peer teaching in a theological school context.