Criterion-referenced - this means you should clearly be able to link the feedback that is given to a specific assessment criteria number in the unit standard that is being assessed.
Purpose-oriented - this means that the feedback should serve a purpose, and not just be cute statements like “Good effort and good luck Sally!”
Objective
Set in clear, understandable language (on the learner’s language level).
Explanatory
Positively inclined
To the point (short and pithy)
Indicating the difference between a learner’s attained level of outcome (goal/skill/competency) or achievement and the set outcome (goal/skill/competency) that serves as a standard against which the attained level of achievement is assessed (measured).
Supplying guidelines or indications for improvement.