Is there a way to include the extra credit in weighted total calculation?
Unfortunately, Blackboard calculates weighted grades as a ratio of weighted points earned / weighted points possible. Extra credit points would be added to the weighted points earned, but divided by the weighted points possible. Extra credit points thus must be manually added to the final percentage score or valued in relation to the weighted points possible. The former method is considerably simpler than that latter.
For example, some faculty using weighted grading choose to offer extra credit opportunitie as a 1% increase to their final score. Thus, a student who earned 89% could receive a 90%. In this case, it is best to create a column for the final grade and type the adjusted final grade in manually.
Another example is to award points based on the weighted total points possible, which can be determined by clicking on a student score in the weighted column. The Points Possible will display in the information bar above the Grade Center. If the weighted Points Possible is 55 points, an increase of 1% would be .55 points. Then, the extra credit can be added according to the appropriate ratio.