I'd say it's expected that they exist. I've yet to see any endeavor I can think of that didn't produce some bad examples. I don't know which they are (I've seen a few that seemed pretty bad on a cursory examination), but I'd be really surprised if they didn't exist.I have no list nor would i have made such a broad or damning comment.
Are there bad schools? Yes, definitely. Bad systems? I can’t say that. I don’t know anyone who have broad enough experience to make that judgement.