Most students read a rubric the way they read a packing list: a set of things to include, ticked off on the way past. It is not a list of things. It is a statement of where the marks are, and the two produce very different essays.
Almost everything has one
On a real enrolled account — 61 assignments across six courses — 52 of them carry a rubric. That is 85%. It is not an occasional extra on the big pieces; it is the default way work is marked, discussion posts included.
One criterion usually carries about a third
Across those 52 rubrics the heaviest single criterion carries, on average, 32% of the available marks. On one of them it carries 75%. The rubrics run from two criteria to eight, averaging four.
That average is the useful number. If a third of the marks sit on one criterion and you spread your effort evenly across four, you have spent three quarters of your time earning two thirds of the marks. The prompt will not tell you this. The prompt describes the task; the rubric allocates the budget.
| Criterion | Points |
|---|---|
| Evaluate / Assess / Interpretation / Application | 30 |
| Participation | 30 |
| Scholarly Dialogue | 20 |
| Writing Skill | 20 |
Read as a checklist, that rubric says “analyse, participate, engage, write well”. Read as a budget it says something far more specific: turning up and replying to people is worth exactly as much as the analysis, and half the marks have nothing to do with the quality of your argument at all. A brilliant post made once, on the last day, loses 30 points before anybody reads it.
The part that is usually missing
Every one of those 52 rubrics has rating levels — the columns a marker chooses between, each worth a different number of points. There were 708 of them on this account.
Only 176 had any written description. Three quarters are a label and a number: “Exceeds Expectations, 30”. So the thing students most want from a rubric — a description of what full marks actually looks like — is there about a quarter of the time.
What to do with it
Find the heaviest criterion before you start. Not while proofreading. It is the one piece of planning that changes what you write rather than how you tidy it.
Check whether a criterion is about behaviour rather than content.Participation, timeliness, replying to classmates, formatting. These are the cheapest marks on the page and the ones most often dropped, because they are not what the assignment feels like it is about.
Read the level descriptions where they exist. A quarter of the time somebody has written down exactly what full marks looks like, which is as close to the answer as you are going to be handed.
Related
The points on the assignment are a separate trap — why the points do not tell you what it is worth covers that one. And once the rubric has been filled in, why Canvas tells you the grade before it tells you why is what happens next.