Microsoft 2010

You'll have to buy Parallels or some kind of virtualization along with Microsoft Office 2010 for Windows and run it via virtual machine.

 

Ask the teacher, why it has to be MS Office 2010 and not MS Office 2011, even though they are compatible. Does MS Office have something MS Office 2011 has not, would be one of the questions I asked. And if the teacher has no good, technically routed answer, then just your version.

And if it has to be MS Office 2010, you need to use Parallels Desktop, VMWare Fusion or Virtual Box to run Windows and thus be able to install MS Office 2010. Ask your school, if they have discounted versions of Windows and Office.

 

If you ever get around another battle, just keep asking why. If it is just ignorance from the teacher's side, then there is no reason to use 2010, but if the teacher has a valid reason, and teachers should be able to reason, then that is good too. But as I know my way around computers, I may find it easier to ask such questions, if it would be environmental (mental?) law, I would look like an idiot.