|Go to the CLASS screen and look at the ACTIVITY TYPE WEIGHTING (category weighting) in the bottom right hand portion of the screen. This problem
is usually caused when all the activity types do not have a weighting assigned
to them or are set to "DON'T AVG" or "0". To fix this problem enter in the appropriate activity type weighting values or choose "USE POINTS" if you are
on a points based grading system. For more information on using points vs.
weighting grading please read: