Okay, so I'm a teacher. And I teach on a "team" of other people. I teach history, and they teach math, science, and English. I have my own class website, but I wanted to set them up with something.

What can I use to create a way for them to edit/create pages that would be really intuitive and easy to use? Perhaps something like wiki... but even that might confuse them. What kind of script/news program/etc would work in this situation?

Ideally, I imagine something that would have a little "edit" button at the bottom where they could enter a username and password and then just select text and edit it.

Thoughts?