I would plan something new for the site as well, maybe bring in the new students into the brainstorming and planning for soemthing new. This will give them a chance to see some project management and how to roll out something new.
Also, not sure how your site is hosted, but be sure to bring them up to speed on that as well. Someone needs to know what to do if the hosting service goes south.
And if you really want to have some fun, back up your site, wipe it out and teach them about disaster recovery
