Boxing gym in Chicago

I am looking to start boxing and I live in Chicago. Does anyone know of any good gyms in Chicago that handle this sort of thing? I already have a membership to Powerhouse, so I don’t want to spend a lot on a new membership at someplace like Gorilla Sports or Crunch Fitness. The park district offers cheap classes, but I’m not sure if they are any good. Has anyone tried them? Any suggestions would be appreciated.

Try Degerberg Academy of Martial Arts on North Lincoln. I believe they offer boxing lessons. The URL is http://www.degerberg.com/