A well-done rubric is a thing of beauty for both students and instructors. They provide students with a set of guidelines to help them meet your expectations for the assignment and they provide you with a method to streamline your feedback and grading. But when they’re not set up well, a rubric is no use to anyone! Let’s look at what makes an effective rubric effective.
If you’d like a few more specifics, here’s a short article on How to Write Great Rubrics.