A similar thread was started a few weeks ago... http://giftedissues.davidsongifted....al_Norms_Success_Stories.html#Post169478

Another poster recently reminded us of the Davidson Advocacy Guidebook:
http://print.ditd.org/young_scholars/Guidebooks/Davidson_Guidebook_Advocating.pdf

Another poster recently shared what worked for their family: http://giftedissues.davidsongifted....ject_acceleration_is_aga.html#Post170857

Each situation is different... there is much research and many anecdotes to draw possible solutions from. Searching the forums, the Davidson Database, Hoagies Gifted Education Page, and Hoagies on facebook may all yield ideas.