A rubric is an evaluation tool that sets consistent criteria for assessing student work and provides clear guidelines for grading, feedback, and improvement. There are two main types of rubrics: holistic, which evaluates work as a whole, and analytic, which assesses multiple criteria separately, each with its own rating scale. To create a grading rubric, instructors should define the assignment's purpose, choose the rubric type, establish criteria, and design a rating scale with clear descriptions for each level of achievement.