I've taught sixth grade English for five years and this year I decided to use classroom jobs. I've written these 7 jobs in a space theme using higher level language. My students are very excited about these and eager to start their jobs. We've also used the difficult words to strengthen our vocabulary.
This document is in a .docx so that you may "tweak" the materials for your classroom. I've also highlighted these areas in red that are specific to my classroom.