We absolutely involve the principle in planning for our DD - "because thy have the overview / long term plan". Whe thy were at private school though the special Ed teacher was much more useful. You have to figure out who at your school gets things done...

But also junior primary is just hellish for such a gifted child, and the earlier in their schooling the worse it is.... My youngest is 2 yrs from starting school and I am already pain stricken about her first year/s