Blackboard maintains a list of supported browsers for Scholar at: https://en-us.help.blackboard.com/Learn/9.1_2014_04/Instructor/015_Browser_Support/013_Browser_Support_for_October_2014
Currently, ITS recommends using Firefox with Scholar. Discussions and tests currently have significant errors with Internet Explorer. SafeAssignments are currently not working with Safari. While Chrome works with most parts of Scholar, you may encounter some issues resizing images placed into your content. If you're having trouble accessing Scholar, you can use the 24/7 room in the library, which is maintained with browser versions that can access Scholar.