I can echo aeh’s experience, both personally and as a parent. In the absence of excellent gifted magnets, seeking flexible administrators has been a key part of my strategy for DS.

Slight tangent - adding in case it’s relevant to those reading…

Ironically, I think some of our kiddos make advocating for radical acceleration pretty easy in these environments, especially if they’ve had a supportive teacher or insider pave the way for advocacy. This applies doubly if your child is extraverted, obvious, and (*ahem*) exuberant when not fully mentally occupied.
What is to give light must endure burning.