The Oxford Bookworms Library serves as a comprehensive graded reading series designed to improve English language acquisition through accessible, leveled storytelling. Jennifer Bassett, an experienced educator and series editor, oversees the development of these texts to ensure they align with specific linguistic proficiency levels. The series utilizes a controlled vocabulary and simplified grammatical structures to help learners build reading fluency and comprehension skills. By providing a wide range of genres, the collection aims to engage students while reinforcing core language concepts.

Educators and language instructors frequently cite this series as a foundational resource for English as a Second Language (ESL) curricula. Experts highlight the consistency of the grading system as a primary benefit for students tracking their own progress over time.