For the most part, Office 2008 should be capable of opening anything you're likely to encounter in some class. Office 2004 probably could too, the only possible issue might be if the stuff is saved in the OOXML format. Not sure if Microsoft ever released an update for Office 2004 like they did 2003 to allow it to open these files.
But assuming this is some kind of "Intro to MS Office" type class, the odds of them using anything remotely complex is very minimal, so I really wouldn't worry about it. Worst case scenario, you use one of the school computers to save it in the older Office 97-2003 format before emailing it to yourself or loading it onto a flash drive or something. Probably not the sort of thing that'll be covered in the class material, but if you're going to be a Mac user, it's definitely something you should take it upon yourself to learn.
Good night everyone. How have you been? It has been a while since I posted anything on the board. you all have helped me a great deal in the past now I have a question. I am taking classes for Microsoft Office. The school is using office 2010 for windows. I am a 100 percent Mac user. If I am given any projects to work on at home, is office 2010 compatible with office 2004 or 2008 for the Mac? I have both installed on my G4 Power Mac. I do not have Intel Mac so I cannot use office 2011 for mac. Are there any converter software to use?