Are there any good places to find a writer's workshop in Chicago?

I've actually struggled to find a good writer's workshop. It's not that they're not around, but the ones I've been to don't really satisfy me. You can certainly find a bunch of them though, for poets and non-fiction writers to the next great American novelist-type ones. I think I first started my search here: http://chicago.cbslocal.com/top-lists/best-writing-workshops-in-chicago/

If you find any you like let me know.