In the teacher gradebook, remove the teacher's ability to see the final grade column since the calculation for the final grade for a course is not the exact calculation it is for the report card final grade. The final grade column in the teacher gradebook uses the formula the teacher uses for the course (total points or total points by weight) and not the report card calculation for the final grade (which is the average or 50/50) of both semesters for year long courses.