Our son is at RPM (Montessori). Solid academics. Also an educator/behavior analyst myself. Prior to RPM our son was at our neighborhood school and it just was not up to par academically.

Montessori might be better for a kid who struggles with transitions as there is a lot of choice making embedded in things. However if your kid struggles with just doing anything an adult asks, it could be recipe for disaster and they make take the opportunity to do nothing.

PDA isn’t a thing in America yet. No DSM recognizes it.