If developing teamwork skills is one of your learning objectives for the course, then your assessment should assess both the process (how students work in the group) as well as the group’s end product (the work they produce as a group, such as a paper or presentation). Without assessing the group process, it is difficult to reliably and fairly break down group effort into individual marks.
Group assessment is also a common complaint by students, including concerns about ‘loafers’ who do not pull their weight and ‘lone wolves’ who complete the work individually rather than collaborate with the group.
The following tips will help you devise assessment that is fair and validly reflects the performance of the group and its individual members.