Menu: Exams and Results, then Delete Testing Data.

This removes mark records. It does not delete CBT exams, students, or the exam name. Use it only for scores that were entered as a test.

One student: Choose session, term, examination, class, and student, then click the red Delete. If that student has no scores, the page says so.

One class: Choose session, term, examination, and class, then Delete. This removes the scores for every student in that class for that exam.

Delete all data: Asks you to confirm, then removes marks, class positions, kindergarten grades, and student remarks for the school.