Wow! That's exactly what we are going through with the schools, Trinity. I think it really boils down to professionals who really have no clue about their own fields. Mite, I feel, is far brighter than the WISC IV indicated even in the verbal areas. When talking to the school psychologist about the testing, I was told the room was very warm and there were a lot of hallway distractions because kids were having a lot of free time due to it being the last 8 weeks of school. A couple of times Mite missed questions because kids waved at him while they were walking by and the school psychologist wouldn't repeat the questions because you can't on the WISC IV. I had to really bite my tongue to keep from pointing out that you also "can't" administer the test in a noisy, high distraction area. sheesh.
Our DS14, behaviorally was more like your DS10. Tecahers were always complaining about him. We have never had him evaluated and he doesn't want to be now, but I know he is highly to exceptionally gifted. We are thinking he will be testing this year regardless of whether he wants to or not. I think he has the right and responsibility to know what his abilities are. I will say he has calmed down and hit his stride since entering middle school. He's been A honor roll all but one trimester when we missed a month to travel abroad. That time he was B honor roll. So, at least he has learned to roll with the system. I don't want him to settle for that mediocrity, though.