Sounds fun. I guess they just magically become gifted after kindergarten?
Honestly from here any gifted programming that doesn't cost a fortune and take place somewhere else seems quite good. A two hour pull-out enrichment would be better than nothing.
The problem with great high school courses is if things at school are bad you don't make it that far in good enough condition to qualify.
Why is his current school not an option - cost? Does it not cover all the elementary years? It does sound like a good school.
