So, the first time you are late with your weekly writing or a draft of a formal paper, I will ask you what the problem is. Three late drafts means automatic course failure. People turning in triple-spaced papers in really big type will be asked who they think they are kidding. People asking whether a bibliography counts as a page for the length requirement will be brusquely waved away. People asking whether a title page counts will be taken out and shot.
Concept addresses the strength and clarity of the paper overall.
Analysis addresses how well you've developed and supported your paper. Structure addresses how well you've led the reader through your paper. Style addresses how the paper sounds.