Thank you all for chiming in. We are leaning towards keeping him in our small private since he has been really happy there. I am finding that I am really attached to our community and maybe I am not ready for the change either.
The gifted program is more of a humanities program and they do have different curriculum than general education, only math is the same. It captures about four to five percent kids in the system, but since our district has a highly educated parent population, so presumably the IQ score of these kids would be higher than 95 percentile nationally. The program has a good reputation, and some around us think we are crazy to even think about turning it down. This is the kind of things that are giving me pause. Thanks you all for providing a balancing opinion.