This is a rubric that can be used for primary grades to assess students' ability to take on the role of a leader and create rules that match the role.
We are using this rubric to assess our kindergartners' ability to take on the role of a leader in our school (principal, teacher, custodian, cafeteria manager, etc). They will describe two responsibilities of that role, then describe two rules that leader should create that promote fairness for all who interact in their space (entire school, classroom, cafeteria, etc).
This rubric was created with Colorado Social Studies standards for kindergarten in mind, but will correlate nicely with any unit or lesson in which students are learning roles and responsibilities. Let me know if you'd like to edit and I can send you the Word document (there is a special font, though).