Inquiry-Based Learning (IBL) is important for today's education because it reflects a response to the changing needs of students, society, and the world of work in the modern era. Teachers are not only assigned to teach and manage activities in the classroom but teachers are also tasked with building effective relationships with students. In this study, the researcher used a data analysis technique based on Miles, M. B. and Huberman (1994), which includes three steps: data reduction, data visualization, and conclusion/verification. The success of implementing IBL is seen in all students in one class being taught. The advantages of implementing IBL in an EFL classroom are that it increases students' creativity, makes students closer to the teacher, and makes them more independentfor disadvantage of implementing IBL in EFL classroom is that students have less capacity to catch up. This research concludes that teachers who implement IBL in EFL classrooms for the primary school level must have a solid strategy to implement it successfully. Based on the results of the study, teachers can apply IBL using a variety of strategies.