I don't think it amounts to an admission of guilt. But it does amount to acceptance of CPS intrusion into their lives. That is not a step to be taken lightly and would justify the "push back". I've never taken a "parenting" class and I don't think I need one. Any crimes or child abuse taking place within the FLDS is not happening because parents haven't taken a class in "parenting".
The way to stop criminality is with the criminal justice system. Probable cause, rules of evidence, juries of peers, and all that "due process" stuff.
One loftover kid and there’s a doggone good kidnapping case to file against every single F(lds) member. I’m sure they are all prepared for life in prison.