Yes! Full or partial data can be downloaded from the Grade Center. Once downloaded, grades and comments can be changed and added offline and later uploaded back to the Grade Center. Data can be downloaded as tab-delimited or comma-delimited files. Downloaded files can be saved on a local computer.
From the Full Grade Center page, choose the Work Offline button and then Download.
For more information and a video, visit Blackboard's help site, Working Offline with the Grade Center.