This is a rubric that I use in my Newspaper class to evaluate students' performance each publication cycle on their job completion and their collaborative effort as a member of our newspaper staff. It includes a portion for student self-reflection as well as teacher grading, for a total of 50 points. Can be modified to fit your news organization's unique criteria.
Also included are staff job descriptions and a job application form. These jobs were created for my Newspaper class to give students additional responsibility outside of their monthly article assignments. There is a built-in staff hierarchy and students can be organized into reporter teams for each publication cycle. Additional positions can also be created to suit your organization's needs.