Know any parents of GT kids? Adults who your DS talks science or math to? Camp counselors? Babysitters?
The pre-K teacher would be just fine. DS8's K teacher wrote his, and though she IDd him as GT, I'm not sure she got just HOW GT he was. But I don't think that matters so much.
They just want to know that you're not a nut, I suspect. If someone else can say, "Yes, the child is smart," that's all that's really needed to show that you didn't have your kid memorize the IQ test or something crazy like that. Don't stress over it.
