The document provides descriptors for each band score (1-9) in the IELTS writing task. It describes the level of performance in the areas of task response, coherence/cohesion, lexical resource, and grammatical range for each band. Higher band scores are characterized by fully addressing the task, extended and well-supported ideas, sophisticated vocabulary and grammar usage with few errors. Lower band scores address fewer aspects of the task, have limited development of ideas, inadequate organization, limited vocabulary and more grammatical errors.