This rubric taken from John Bean, Engaging Ideas
Range and depth of argument; logic of argument; quality of research or original thought; appropriate sense of complexity of the topic; appropriate awareness of opposing views.
Effective title; clarity of thesis statement; logical and clear arrangement of ideas; effective use of transitions; unity and coherence of paragraphs; good development of ideas through supporting detail and evidence.
Ease of readability; appropriate voice, tone, and style for assignment; clarity of sentence structure; gracefulness of sentence structure; appropriate variety and maturity of sentence structure.
Grammatically correct sentences; absence of comma splices, run-ons, fragments; absence of usage and grammatical errors; accurate spelling; careful proofreading; attractive and appropriate manuscript form.