These three writing rubrics were staples in my 5th grade ELA classroom last year. We use these for each of our final pieces turned in for our portfolio. Each rubric is aligned to the common core writing standards for opinion, explanatory and narrative writing. Each rubric also includes a section for scoring L.5.2 (which applies to grammar and convention use within writing pieces).
I hope these three rubrics will become your go-to when it comes to setting expectations and grading fifth grade writing!
NOTE: Since the CC for 5th grade can be quite extensive, the narrative rubric has the final score and comments section moved to a "back page" I would copy this straight to the back of your chart page!