Writing new criteria
Use this method whenever you add a criterion or rewrite one from scratch.
Form Your Own Picture First
Before reading the draft closely, write down in a few bullets what the user wants from the final message, what a strong answer must do, the one or two mistakes a plausible answer would make, and what each image shows.
One Requirement at a Time
Write one row per item on your requirement map. Start each row with "The response ...".
Make It Concrete
Say what a correct answer contains: the cause, the value, the command, the element. No judgment words.
Keep It Open to Every Valid Fix
Name the goal and give examples ("for example A or B"), unless the user asked for one specific approach.
Pick the Weight
Leave-it-out test: if a correct answer could leave it out, it is not critical.
Write Penalties as the Mistake
"The response says ...". True means the mistake happened. Never a double negative.
Pick the Dimension and Images
Pick the dimension and only the images a grader must look at to mark this row. A penalty judged from the answer alone needs no image.
Run the Four-answer Test
Walk four short answers through your rubric (below).
The four-answer test
Picture four short answers and walk each one through your rubric:
If any answer gets the wrong result, fix the rows before you submit.