Content / Ideas - the heart of the paper - what the writer has to say.
Organization - the road map which directs the reader through the paper.
Voice - the personality of the writer coming through on the page.
Word Choice - what gives an exactness to details and helps the writer paint memorable pictures in the reader¹s mind.
Sentence Fluency - In any piece of writing, there are many possible ways to write any sentence correctly, but usually, of those correct versions, one or two will sound better than others. A writer who can pick out those versions and can use them frequently will have a strong sense of sentence fluency.
Conventions - the rules of a language.