Grade of "A": Exceptional/Excellent
  -  Thorough, thoughtful, and thought provoking treatment of the topic.
-  Logical and convincing expression of ideas.
-  Clearly articulated thesis (statement of position on topic)/opinion that leaves no doubt as to what the writer thinks and why.
-  Ideas are original and complex and developed in depth.
-  Carefully and appropriately uses pertinent examples to illustrate points/support argument.
-  Free of grammatical or stylistic problems.
-  Easy to follow because of good organization, structure, word choice.
-  Clarity and eloquence. 
Grade of "B": Above Average 
  - Pretty good in most ways, but generally less thoughtful and articulate than A  work.
-  Often B  papers are those which mostly parrot back what the professor and readings have to say or what others think rather than expressing unique/original thoughts and ideas.
-  Thesis (statement of position on topic)/opinion is articulated but not enough substantive support is provided to explain it fully.
-  Good points were made, but there were a few vague or underdeveloped points that needed more substantive support to flesh out ideas.
-  Follows directions and understands the concepts but doesn't discuss them in ample detail.
-  Gave a report from other sources or developed a topic rather than a thesis.
-  Writing style may be less fluid or sophisticated than the A  paper's.
-  A few grammatical and stylistic problems, but the discussion is still quite competent as well as easy to follow. 
Grade of  "C" : Average 
  - Demonstrates an understanding of most of the concepts involved in the assignment but may not have read assigned topic very thoroughly or followed directions completely.
-  May identify a thesis(statement of position on topic)/opinion, but doesn't thoroughly explore reasoning or expresses it in a confusing, ambiguous/vague manner.
-  Has relied too heavily on outside sources or the opinions of others.
-  Key points are made but there is little support for them, so discussion remains shallow &/or treatment of topic seems superficial.
-  Lacks specific details and pertinent examples to flesh out ideas.
-  Writing is comprehensible but often awkward due to language usage &/or stylistic problems as well as grammatical &/or punctuation errors that make understanding ideas difficult. 
Grade of "D": Below Average
  - Seriously flawed, poor quality work. 
-  States the obvious or makes points that remain unclear &/or unsupported.
-  Thoughtless, underdeveloped, or careless treatment of topic with no thesis (statement of position on topic)/opinion expressed.
-  Demonstrates little understanding of the topic with a rather shallow exploration of the material.
-  Argument is incoherent due to lack of detail &/or language usage problems.
-  Thoughts wander aimlessly among several ideas without developing any single one.
-  Relies entirely too heavily on others' work, rather than developing her/his own ideas.
-  Lacks revision &/or editing with lots of typos and/or jumbled thoughts.
-  Writing makes the professor wonder if the student even read the assignment or applied himself/herself at all. 
Grade of "F": Fails to meet standards for college level work. 
  - Little redemptive appears in F  work.
-  Fails to address the assignment in fundamental ways.
-  Fails to follow directions/guidelines of the assignment.
-  Fails to state thesis (statement of position on topic) &/or leaves opinion completely uninformed &/or unsupported.
-  Shallow or confusing treatment of topic.
-  Writing is mostly stream-of-consciousness with not attempt to be coherent or logical.
-  Not enough detail to comprehend points.
-  Used outside sources without proper MLA citation. (This may also constitute plagiarism, and, in turn, may call for disciplinary action. See syllabus for details.)
-  Language problems so severe that it's difficult or impossible to comprehend ideas.
-  Thankfully, few students do so poorly that they earn F 's.