Keberadaan buku teks dalam proses pembelajaran merupakan salah satu hal yang sangat penting, karena digunakan sebagai sarana penunjuang untuk mendukung proses pembelajaran dan mencapai hasil pembelajaran yang maksimal. Terdapat berbagai jenis buku teks Bahasa Indonesia yang digunakan dalam pembelajaran di sekolah, baik yang diterbitkan oleh pemerintah maupun swasta, seperti buku teks yang diterbitkan oleh Kemendikbud dan Quadra, namun, tidak semua buku teks Bahasa Indonesia sesuai dengan standar kelayakan buku teks yang ditetapkan oleh Badan Standar Kurikulum dan Asesmen Pendidikan (BSKAP), maka dari itu, peneliti bertujuan untuk meneliti perbandingan kelayakan buku teks Bahasa Indonesia kelas X Kurikulum Merdeka terbitan Kemendikbud dan terbitan Quadra berdasarkan kriteria penilaian Badan Standar Kurikulum dan Asesmen Pendidikan (BSKAP), meliputi standar kelayakan materi, standar kelayakan penyajian, dan standar kelayakan desain. Metode yang digunakan adalah deskriptif kualitatif, dengan teknik pemerolehan data jenis studi pustaka dan dokumentasi serta teknik pengolahan data bentuk analisis. Berdasarkan hasil analisis kedua buku teks tersebut, buku teks Bahasa Indonesia kelas X terbitan Kemendikbud lebih unggul dibandingkan buku teks Bahasa Indonesia kelas X terbitan Quadra, karena dalam buku teks Bahasa Indonesia kelas X terbitan Quadra terdapat kekurangan dari segi ketepatan materi dan penggunaan kata yang kurang sesuai dengan pedoman KBBI. Tetapi pemilihan dan penggunaan buku teks di sekolah dikembalikan pada kebijakan sekolah yang disesuaikan dengan kebutuhan dalam proses pembelajaran.
Kata kunci: analisis kelayakan, buku teks, BSKAP, kelayakan desain, kelayakan materi, kelayakan penyajian, Kemendikbud, Quadra

The existence of textbooks in the learning process is one of the most important things, because it is used as a supporting tool to support the learning process and achieve maximum learning outcomes. There are various types of Indonesian language textbooks used in learning in schools, both published by the government and non-government/private, such as textbooks published by the Ministry of Education and Culture and Quadra, however, not all Indonesian language textbooks comply with the textbook eligibility standards set by the Curriculum Standards and Education Assessment Agency (BSKAP), therefore, the researcher aims to examine the comparison of the eligibility of Indonesian language textbooks for grade X Merdeka Curriculum published by the Ministry of Education and Culture and published by Quadra based on the assessment criteria of the Curriculum Standards and Education Assessment Agency (BSKAP), including material eligibility standards, presentation eligibility standards, and design eligibility standards. The method used is descriptive qualitative, with data acquisition techniques in the form of literature studies and documentation and data processing techniques in the form of analysis. Based on the results of the analysis of the two textbooks, the Indonesian language textbook for grade X published by the Ministry of Education and Culture is superior to the Indonesian language textbook for grade X published by Quadra, because in the Indonesian language textbook for grade X published by Quadra there are shortcomings in terms of material accuracy and use of words that are not in accordance with the KBBI guidelines. But the selection and use of textbooks in schools is returned to the school's policy that is adjusted to the needs in the learning process.
Keywords: BSKAP, feasibility analysis, design feasibility, material feasibility, presentation feasibility, , Kemendikbud, Quadra.