You can define custom feedback for questions with a group name and condition that would need to be met.
For example here are two types of feedback with condtions.
Group = Solution Condition = teacher
Group = Correct Condition= 1
Type: FOptions: NumberVar: a = 3..92) 2 * $a$ = _____@[Solution] Feedback that only the teachers see@[Correct] Feedback for those with score >= 1
When multiple feedback rows exist, the system displays only the first row that matches a condition. You can enable multiple-feedback-row display by grouping conditions; the system displays the first matching row from each group unless DisplayAll is specified. Start a condition with GroupName: to identify a feedback group: