This is a three point rubric aligned to common core standards. It is a general writing rubric that can be used to assess different types of writing. You can focus on the different areas of the six traits for any particular writing piece.
Six Traits of Writing Rubric - Kid Friendly Version
It is broken down into several versions.
A whole basic version.
A version separated into the traits.
A beginning of the year, middle of the year and end of the year for differentiating your