Hi,
An issue with the Stairs in Revit 2014 was fixed in Update 1 and Update 2. We strongly recommend installing the updates for your Revit product.
For more information please see
Revit Updates
Hope this helps.
I am not a student (in the formal sense of the word), so I am not familiar with what is being offered to students. But I do know there is a good deal of confusion among commercial users regarding the application of updates and hot fixes. It is important to understand exactly what type of Revit you have installed, and then find the appropriate update/hot fix. Some of the hot fixes may be type-independent, but the updates generally are not. On the commercial side, it is possible to have Revit Architecture, Revit Structure, Revit MEP or, if you have a suite, Revit (sometimes referred to as "one box," which includes the capabilities of all three). The latter can be configured to look similar to one of the other three, but there are separate updates for all four, so knowing which one you have is key.