Something else to consider is the population at the two schools.

At our school, which is located in an affluent neighborhood, and buses kids over from a less affluent neighborhood, most of the GT kids are the children of very involved parents. (Now it's true that not all of the kids staffed as "gifted" are actually all that bright; there are psychologists in the area who are known to fudge test scores). Nevertheless, the kids in the GT classrooms reap the benefit of having parents who spend time volunteering, bring extras in from home, etc.

My DD is in a non-gifted kindergarten this year, and there's practically no parent involvement in the class. The teacher is wonderful, but the class doesn't have the benefits the GT class does in terms of parent support.

It's just something to think about. And I'm not even saying which school would be which, as I don't know the areas. But it makes a big difference at our school.