How do you think the community education based schools (dojo's) fair? Do you think they produce individuals who can really defend themselves or are they more activity like - getting people to jump around and punch and kick?

I have visited a class in my community and it seemed like a joke. I just don't want my kid to be in a class like this - though for $20 dollars it almost sounded like a good deal.

Anyway, has anyone seen any long-term success with this type of program?

Thank you