why printing student report card, the total Sum and average calculated wrongly?

This incident happened is might caused by the school teachers are entering the subject marks again after produce class ranking process is completed, then result enquiry will only effective with the previous calculation, not the latest one. Therefore we suggested the School Admin/Exam Committee might able to ask the teacher complete update the subjects marks before produce class ranking, this is to ensure that system will calculating the correct & latest subject marks input by subject teacher.