Writing feedback
When you send a task back, the fellow should be able to fix it from your comment alone.
Good
"c2: 'adds the header properly' cannot be marked the same way by two graders. Rewrite it to name the header and the values that pass, for example 'sets Access-Control-Allow-Origin to http://localhost:3000 or *'. Also, p1 is the mirror of c1 (missing the header fails both); remove p1 or make it a different wrong fix."
Bad
"Some criteria are vague and there are overlaps. Please fix."
Why it works: it names the row, the problem, the evidence and a concrete fix.
Why it fails: the fellow has to guess which rows and what to change.
Every comment
Work through each item.
Checklist
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