<![CDATA[Textbooks are the primary source of learning in formal education and play an important role in supporting the implementation of the Independent Curriculum (Kurikulum Merdeka), which emphasizes deep learning. A research gap emerges because studies on regional language textbooks generally focus on content and culture, while the integration of deep learning principles is still rarely examined systematically, even in recent research on regional languages. The purpose of this study is to review the level of alignment of the Sundanese language textbook "Panggelar Basa Sunda pikeun SMA/MA/SMK/MAK Kelas XI" with the principles, processes, and framework of deep learning. This research employs a qualitative descriptive approach with documentation study techniques on four representative chapters in the textbook published by Erlangga in 2023. The research instrument consists of a checklist based on deep learning indicators covering deep learning principles (conscious, meaningful, and joyful), deep learning processes (understanding, applying, and reflecting), and the deep learning framework (pedagogical practices, learning partnerships, learning environments, and digital technology). Data were analyzed using a dichotomous scale and converted into percentages. The main findings indicate that deep learning principles and processes are implemented very well (100%), while the deep learning framework is in the good category (81.25%), with the main weakness in the learning partnerships aspect, which only reaches 25%. The findings of this study confirm that the Panggelar Basa Sunda textbook has functioned effectively as a facilitator of deep learning in the classroom, but still requires strengthened partnership design with the community so that the integration of deep learning becomes more balanced and contextual.]]>
