<b>Bilingual Education to Improve Understanding of <i>Aqidah</i> at Salafi Islamic Boarding Schools</b>

This study aims to examine how bilingual education can improve students' understanding of Aqidah learning through the Arabic language Ushul Tsalatsah book. This study uses a qualitative case study approach to explore bilingual education in Aqidah learning at the Imam Syafi'iy Islamic Boarding School (pesantren) in Bima City. Data were collected through observation, interviews, and documentation. Data analysis using the Miles and Huberman model. Validity testing through triangulation of sources and techniques. The study results show that bilingual education uses the Content and Language Integrated Learning (CLIL) approach. Learning planning depends on the experience and understanding of the ustadz (teacher) without a formal learning plan. Core activities are carried out by students reading, analysing, and discussing Arabic-Indonesian texts alternately. Students receive explanations in two languages to facilitate understanding of Arabic vocabulary. This step effectively improves students' understanding of Aqidah and Arabic language skills. The ustadz, as a facilitator, provides feedback to create dynamic and responsive learning. The CLIL method in bilingual education has successfully improved understanding of religious material and language mastery. This study's novelty lies in applying the CLIL approach in bilingual education through dynamic and responsive bilingual education. The study's limitations were due to the selection of the research location of only one Islamic boarding school and using qualitative methods so that the findings could not be generalised to other Islamic boarding schools. Further research suggests exploring the impact of digital technology in supporting bilingual education in Salafi Islamic boarding schools.