Rubrics provide structure and information that both students and faculty value. For students, rubrics take the guesswork out of how faculty evaluate their work. For faculty, rubrics provide an easy to follow, objective way of measuring levels of student achievement. Using a rubric speeds up grading, reduces student questions, provides useful feedback, and can prevent implicit bias.
Rubrics can be created and deployed in Blackboard with points, percentages, or a range for either, which make for easy grading. There is a space to enter feedback for each category and overall feedback, which makes it easy for students to see comments. Rubrics are an essential tool if your courses use TAs or graders.