Just a heads up - the Blackboard app does not seem to play well with Android devices. Some schools work fine, but some don't play at all. I just bought a Samsung Galaxy Tablet and BB doesn't work on it for my school at all
It does, however, work fine on my iphone Blackboard App. So while the app exists for Android, it seems to be school specific whether it works or not. I'd check with your school's IT department before buying a tablet (in general).
(just a pre-nursing student, but I do work in IT currently! Happy shopping- I <3 Gadgets!)