I so know what you mean about the "professionals" within the system (criminal justice or some RTCs/Juvenile programs) who think parents are an unwanted and unneeded accessory in their kids' lives. We're not bad parents because our children have mental health issues. I admit there are bad parents out there who don't invest the time and trouble to provide the appropriate help from doctors, therapists, medications, etc.
However, for those of us who exhaust ourselves with research, appointments, school meetings, outbursts, physcial and verbal assaults, and finally turn to the criminal justice authorities for an intervention, somehow, we're now to blame for everything.
When I found myself in this situation when N* was placed by the court in an Residential Treatment Center (RTC), I brought along my three ring binder full of N*'s history - school records, IEP info, every visit to her pediatrician, psychologist, probation officer, lawyer, etc. When someone insinuated I was another bad, uninvolved, and uncaring parent, I'd put the binder on the table, and ask what more I should have done. And smiled sweetly.