Create Two Sections in 1 Course Site

My apologies for the double whammy, I sent a message to the group instead of posting my question here - one of those days ;). So here goes again:

I will be teaching two sections of an introductory computer/tech literacy class this Fall. They will be identical in every respect, so it makes sense to set up just one site for the course.

However, is there a way to have two sections operate within the 1 site, independent of each other? I'd especially like to keep the grade book separate, just to minimize confusion.