Can you share libraries between two different version of iTunes?

My school recently got MacBook Pro's for everyone, and we are allowed to put our music on them to listen to during study hall. I was just trying to transfer my iTunes library on my Windows computer over to my MacBook, and the home sharing doesn't show that they're on the same network. They're using the same wi-fi and I used the same account on both, but the Windows is on iTunes 11 and my MacBook is on iTunes 10. I can't download 11 on to my MacBook without a tech at the school's authorization, so I'm stuck with 10 on that one and 11 on this. Is that why the home sharing won't work? If so, there isn't anyway I can revert this one back to 10, is there?