Is there a way to absolutely force a Log Out, Shut Down, or Restart with open tabs and unsaved documents?
At my college, they had an app in the Dock whose icon was a white square with LOG OUT in big red letters. It ran a script (put together with appify or similar) that killed all running apps and logged the user off. This also helped with people who didn't know the Mac and didn't look in the Apple menu for the logout menu item.