The way to think about it is that school is child prison, and teachers are guards. From their perspective the main concern is that their prisoners stay calm and under control.
Not even real adult prisons get to drug their prisoners against their will. So it's quite a gift to teachers when parents say, ja sure, we'll give our kid Ritalin, methylphenidate, also known as legal cocaine, to "help him".
Note that how the child is "helped" is only judged in terms of the school, i.e. "doing well" from the teacher's perspective. This is not obviously not the same thing as thriving as a human, which is not judged by a teacher and can only happen when you're finally released from child prison anyway.
Also there's not much value in deferring to "outside" non-school professionals, because all these industries are in loose collaboration. The best case for any of these service providers is that they are able to find some reasonably defensible "problems" with your child that can be made to sound serious enough to demand several years of follow-up, if only to monitor. Because that's their income stream.
Your best bet is to close ranks as a family, don't defer to the school's authority more than absolutely necessary, don't rattle your child's confidence by investigating their defects, let them express their energy in purely self-directed ways wherever they can (*not* more adullt-directed extra-murals), and have some sympathy for what an awful waste of time and infringement on freedom school is for so many kids.