This is great. I have DS8 and in third grade.
Okay next question. Please name your school districts if you feel comfy doing so. Then we can figure out generally where we are that way.

We are in Tustin Unified.
There is a magnet school in the district that has classes that GATE only as well as others, but it is by lottery for GATE-identified and non-GATE identified. My DS8 is not at that school.
At his school, they differentiate for GATE/high achievers.