Developed by the Korean Language Education and Research Center (KLEAR) with the support of the Korea Foundation, the best-selling KLEAR Textbooks in Korean Language series is highly respected by Korean-language instructors and students worldwide.

To accommodate a wide range of student abilities, the series now includes more than two dozen titles. Integrated Korean Textbooks series cover the full progression of Korean language learning—from Beginning 1 and 2 all the way to High Advanced 1 and 2—with all levels available in updated new editions. For advanced learners, the series also offers volumes on Korean composition, language in culture and society, and readers focused on modern Korean literature and Chinese characters commonly encountered in written Korean.

The core Integrated Korean textbooks are based on performance-oriented principles and methodologies, including contextualization, learner-centeredness, the use of authentic materials, a focus on language usage, and a balance between skill-getting and skill-using. They integrate speaking, listening, reading, writing, and cultural content. Grammar points are presented systematically through clear explanations, practical examples, and abundant exercises.

Supplementary materials—including lecture slides, audio files, and answer keys—are available at https://kleartextbook.com. These resources are accessible to registered members of the site.