The tone is not consistently professional or appropriate for the audience and purpose. The tone is not professional. It is inappropriate for the audience and purpose. Sentence Structure Sentences are well phrased and varied in length and structure. They flow smoothly from one to another.
Sentences are well phrased and demonstrate some variety in length and structure.
The flow from sentence to sentence is generally smooth. Some sentences are awkwardly constructed, and they represent an occasional distraction for the reader. Errors in sentence structure are frequent enough to represent a major distraction to the reader. Word Choice Word choice is consistently precise. Word choice is generally good.