Workshops can be ungraded, peer-graded, instructor-graded, or a combination of peer- and instructor-graded. Workshops enable you to create very specific assessment criteria for graders to use. Also, workshops let you set due dates to submit grading work. You can use these and other features to build a strategy to make best use of workshops in your courses.
One strategy for workshops is to have students assessing each other's work before that same work is submitted as a graded assignment. For example, you can create a workshop in which students assess each other's subject matter, outlines, and hypothesis for their term papers or they can assess each other's photos for specific technical and artistic criteria before they are submitted to the instructor for grading purposes.