Live@edu is a service that Microsoft offers for students. As a student you can direct your IT administrator to this site. He can register your school, so you can take advantage of the services that Microsoft offers like:

• Exchange Online (10GB)
• Sky Drive (25 GB)
• Office Live Workspaces

But now Microsoft is announcing the addition of SharePoint Online. The Service will be available starting in the second half of 2010. You can read more here.