A rubric is a scoring tool that lists the criteria for evaluating a piece of work or performance. It describes what counts and the levels of quality for each criterion, ranging from excellent to poor. Rubrics help define quality, improve student performance, monitor progress, and reduce grading time. There are several steps to designing an effective rubric, including examining learning objectives, identifying observable attributes, writing descriptions for different performance levels, collecting student work samples, and revising the rubric based on feedback. Key aspects of a good rubric are clarity, ease of understanding, adequacy, and consistency.