Anyone use Blackboard for submitting grades?

[mike_c]

1. are there any missing grades?

Caveat: we use Moodle at my institution, rather than BB. But I turned off grade aggregation (or whatever they call it) because it nearly always confuses students. In Moodle, one can either ignore zeros (useful when assignments are in the grade book but not completed and turned in yet-- don't want to count those as zeros) or one can count them (useful when missing grades represent missed assignments) but not both. If you set it to do the former, you get results like you cited when students have legitimate zeros.

Personally, I use the grade book ONLY to record and display grades for each individual assignment, then download the whole shebang at the end of the semester and use a spreadsheet to calculate final grades.