Peer assessment or peer grading is beneficial to students in two ways. First, it increases the quantity and diversity of detailed feedback on their assignments and presentations. Second, it facilitates learning and problem solving by letting students see other ways of approaching a problem, and asking important questions about the effectiveness of those alternate methods.
Preparation of the Peer Grading Rubric
Any rubric grading assignment can be augmented with peer grading.
To get started, the instructor should first add one or more “Peer Grading” Components to the rubric. From the “Edit Gradeable” page, under the “Rubric” tab, click the purple “Add New Peer Component Button”. Configure the component points, and add all necessary marks with appropriate points and message text. Once at least one “Peer Grading” Component is added to the rubric, a “Peer Matrix” tab will appear in the navigation bar.
IMPORTANT NOTE: Student peer graders cannot edit the rubric or add new marks!
Preparation of the Peer Grading Assignment Matrix
Next the instructor must prepare the assignments of peers for grading. Currently this is done by creating the explicit mapping/matrix between peer graders and students, and uploading the data as a .csv (comma separated values) file. NOTE: In the future we plan to provide easy-to-use web user interface to generate standard peer grading assignment matrices.
In the example below, each of the five students is assigned to grade three other students. And each student will receive feedback from three of their peers.
This file is uploaded from the “Peer Matrix” tab. After uploading the file, you will see the peer grading assignments for each student:
Peer Grading from the Student
Students who are assigned peer grading will then have access to the Rubric Grading interface for their assigned students. For example, here is the display of the Student Index page:
TODO: By default all peer grading will be double-blind. This implementation is currently incomplete.
FIXME: The peer graders should not see any grading information for the regular, non-peer rubric components. Similarly, the peer graders should not see any of the scores awarded by other students. Currently this information is incorrectly displayed and incorrectly totaled.
When a peer grader selects a student to grader, they will have access to the file browser to view all materials from the student submission, and they will have the TA grading rubric, which contains only the peer components and marks.
Peer graders are encouraged to leave a written overall comment with additional, detailed feedback.
Instructor View of the Finished Peer Grading
The instructor and TAs can check check on the status of peer grading, and inspect the detailed scoring from the TA grading panel interface. The purple bordered panel summarizes the marks selected for each component by each of the peer graders assigned to this specific student. The instructor and TAs can also view the overall comments written by all non-peer and peer graders by clicking on the tabs.
Once the non-peer grading is complete and all or most of the peer grading is also complete, the instructor should then release all of the grades to the students.
Once grades are released the students can view the scores and comments from both the TA / Instructor grading, and also the peer grading.
Note that the peer grading is anonymized.