If your son is up for it, I think I'd be inclined to grab a copy of the grade level expectations and pre-teach the grade 7/8 curriculum before testing. Then you can be virtually assured that there will be no gaps and can quash any potential objections preemptively.
I agree 100%. For gifted kids in situations like this, the "gaps" are usually small things that can be taught quickly, yet they can be used as evidence that the student has to take that course in order to fill them.
The math coordinator in my district really fights the trend for more and more kids to take Algebra early. Not a lot of parents I know like him. He feels that too many kids are taking math too early, and find themselves in problems in High School when they can't keep up. What he does do to try and prevent this is to make his tests about abstract thinking.
He's probably right. If he's putting questions that require abstract thinking on his tests, he's also probably trying to ensure that students have a good foundation in mathematics.
