Has the teacher given the class rubrics or examples of what an "A", a "C", and an "F" report or project would look like, with explanations of why?

These links might be helpful:

http://www.sciencebuddies.org/science-fair-projects/project_guide_index.shtml

http://chemistry.about.com/od/chemistrylabexperiments/a/labreports.htm