In last weeks post I said that I would post ways to use wikis at school. I have a friend that teaches 9th Language Arts and she had a class wikispace last year. She had a lot of success using it for class discussions of literary reads. She felt like students felt "safer" posting their thoughts on the wiki than verbalizing them in class.
I have a link to a site that offers a plethora of ideas for wiki use in classroom. It is broken down by subject area. Click on this link, then click on basic: